A Republican senator is pressing his own party's Senate Judiciary Committee to subpoena Donald Trump Jr. and Hunter Biden, arguing that oversight of presidential families should not depend on which party holds the White House.
Sen. John Curtis of Utah sent a letter to Sen. Chuck Grassley of Iowa, who leads the Senate Judiciary Committee, urging the panel to open investigations into both Trump Jr. and Hunter Biden over their foreign business dealings. Curtis wants both men compelled to testify, and he is framing the request as a direct test of whether Republicans will apply the same standard they used against Hunter Biden to the son of a sitting Republican president.
The letter lands after reports that a Russian oligarch with close ties to Vladimir Putin helped bankroll Trump Jr.'s wedding festivities. AP News reported that Umar Kremlev, who heads the International Boxing Association, helped pay for a private island rental and a fireworks show at Trump Jr.'s May wedding in the Bahamas. The International Boxing Association has received funding from Gazprom, the Russian state-owned energy company.
Curtis did not mince words. He posted on X alongside the letter:
"A toaster is a wedding gift. A private-island party paid for by a Putin-connected oligarch is something else. Republicans nearly wore out the subpoena machine investigating Hunter Biden's foreign relationships. We should not unplug it now. 'Trust us' was not enough then, and it is not enough now."
Neither the Trump Organization nor the White House provided comment to Fox News Digital by publication time. Hunter Biden also did not respond.
The wedding party was the most vivid detail, but Curtis's letter goes well beyond a single event. He argued that serious questions have emerged about presidential family members using the influence of their fathers to boost their business dealings, and that the pattern extends across multiple industries.
Curtis wrote that concerns over Trump Jr.'s dealings "are compounded by Donald Trump Jr.'s active promotion of family-backed cryptocurrency ventures, his continued pursuit of international real estate deals involving direct meetings with foreign heads of state, and his reported investments in defense contracting." He also flagged Trump Jr.'s "significant financial and advisory ties to prediction market platforms that depend on favorable federal regulatory decisions being considered by the Commodity Futures Trading Commission," the federal agency that oversees derivatives and futures markets.
The financial backdrop is substantial. President Trump's income between 2024 and 2025 ballooned by roughly 250 percent, from just over $620 million to approximately $2.2 billion, according to financial disclosure forms reviewed by Fox News Digital. The increase was driven in large part by crypto holdings and ventures run by Trump's sons. Trump Jr. has been described as a key figure in that growth.
That kind of money, flowing through ventures tied to a sitting president's family, is exactly the sort of arrangement that fueled years of Republican investigations into Hunter Biden. Curtis is now asking whether his party is willing to hold the mirror up to its own side. Trump Jr. has since reportedly repaid the Russian businessman for the wedding costs, but Curtis's letter treats the broader pattern, not just one party on one island, as the problem.
The oligarch at the center of the wedding controversy is Umar Kremlev. The Washington Examiner reported that Curtis cited reports of Kremlev's role as a key motivating factor behind the letter. ProPublica first reported the wedding after-party arrangement.
Kremlev heads the International Boxing Association, an organization that has drawn scrutiny for its ties to Russian state interests and its funding from Gazprom. Curtis's letter characterized the oligarch as "Putin-connected," and the senator argued that such relationships "raise legitimate questions about foreign access to members of a sitting president's family and whether such relationships can create actual or perceived expectations of favorable treatment."
Curtis went further, warning that foreign entanglements of this kind "may create expectations of a returned favor that would not be in the best interests of the American people or our allies, and could even create national security vulnerabilities."
Trump Jr. reportedly met with Kremlev again recently, though the specifics of that meeting, its date, location, and purpose, remain unclear from available reporting.
Bettina Trump has publicly characterized the oligarch's payment as a gift between friends, but Curtis's letter treats the transaction as far more consequential than a personal favor.
The political calculation behind the letter is unmistakable. Republicans spent years running probe after probe into Hunter Biden's foreign business dealings and whether former President Joe Biden played a role in opening doors for his son. Curtis acknowledged in his letter that Hunter Biden "has denied involving his father in his business dealings," but argued that Biden's presidency "opened doors that otherwise may have remained closed."
Now Curtis is applying the same logic to Trump Jr. In his letter to Grassley, he wrote:
"The country should not have to accept one standard for the family of a Republican president and another for the family of a Democratic president. Nor should congressional oversight begin and end when control of the White House changes hands."
In a separate comment reported by Breitbart, Curtis was even more blunt: "A Russian oligarch paid for a lavish wedding after-party for Donald Trump Jr., which to me just stinks. It's corruption. I don't like it."
Curtis also cited a striking public confidence number: nearly three-quarters of Americans, he wrote, believe the federal government is corrupt. He did not cite the source of that figure, but used it to argue that selective oversight only deepens public distrust.
President Trump has defended Kremlev's involvement in the wedding, the New York Post reported, saying the arrangement was "totally allowed" and that his son had paid the money back.
So far, Sen. Grassley has not publicly responded to Curtis's letter. No formal committee action, no vote, no hearing date, no subpoena, has been announced. The letter sits as a public challenge from one Republican senator to the chairman of his own party's committee.
Whether Grassley acts will say a great deal about whether the GOP's appetite for oversight extends beyond political convenience. Democrats have already signaled sweeping Trump probes if they retake the House, which means Republicans face a choice: lead on accountability now, or cede the issue to the opposition and look like they only cared about corruption when a Democrat was in office.
Curtis's letter also raises questions that remain unanswered. What specific prediction market platforms is Trump Jr. tied to, and what CFTC decisions are at stake? What defense contracting investments has he made? Which foreign heads of state has he met for real estate deals? The letter names the categories but not the details, and without subpoena power, those details may stay hidden.
The broader financial picture only sharpens the stakes. A president whose disclosed income jumped from $620 million to $2.2 billion in a single year, driven largely by ventures his sons manage, is not a situation the country has seen before. Questions about Trump family business ventures and federal law are not going away.
Curtis is not wrong that Republicans set the standard during the Biden years. They demanded transparency, subpoenaed records, and insisted that proximity to presidential power created obligations that could not be waved away with denials. The question now is whether those principles survive a change in the party label on the Oval Office door.
Accountability that only runs in one direction is not accountability. It is politics.
