Senate Armed Services Committee Chairman Roger Wicker put the White House on notice Tuesday: the law governing Taiwan’s defense isn’t optional. The Republican, a member of the president’s own party, said Washington’s security commitments to the island “must be upheld” after meeting Alexander Yui, Taiwan’s representative to the United States.
His message carried extra weight. Wicker chairs the committee overseeing the nation’s military, and more than $15 billion in national security assistance for Taiwan remains stalled.
The Law Congress Wrote
Wicker grounded his argument in statute, not sentiment. Under the 1979 Taiwan Relations Act, now 47 years old, Washington must provide Taiwan with the means to defend itself. Beijing claims the island as its own territory. The United States has no formal diplomatic ties with Taiwan, but it remains the island’s most important international backer and weapons supplier.
“As members of Congress, we have a duty to make sure this law is adhered to and that decisions about the defense needs of Taiwan are based on our joint assessment of military necessity,” Wicker said in a statement.
He said he discussed what he called rising Chinese aggression against the United States’ Indo-Pacific allies with Yui. Then he pointed to lawmakers’ actions.
“In response — and in accordance with the Taiwan Relations Act — Congress has authorized and appropriated a surge in resources to provide Taiwan with enhanced training, security assistance, and arms sales,” Wicker said. “These authorities must be used for the purposes that Congress intended.”
That last sentence is the crux. Congress passed the authorization and provided the money. The question now is whether the executive branch will spend it as written.
A Stalled Package and a Summit
Wicker isn’t alone. Four other senators from Trump’s Republican Party urged his administration last week to release the more than $15 billion in stalled assistance.
The timeline complicates matters. In May, after a trip to Beijing, Trump said he was keeping a new arms package worth some $14 billion in abeyance. Last week, after meeting President Xi Jinping in Washington, Trump said only that the Chinese leader understood his position on Taiwan. He offered no detail.
China has repeatedly called for an end to Taiwan arms sales. Wicker urged the United States to uphold a precedent set when then-President Ronald Reagan said Washington wouldn’t consult Beijing on arms sales to Taiwan.
Taipei’s Position
Taiwan’s government rejects Beijing’s sovereignty claims and says only the island’s people can decide their future. Taiwan Defence Minister Wellington Koo said earlier Tuesday that Taipei is in continuous talks with Washington about arms sales. Since the Trump-Xi summit, he said, Taiwan had received reassurances that US policy on Taiwan hasn’t changed.
Reassurances aren’t deliveries. The gap between what Congress has funded and what has actually moved remains the point of contention.
Why This Matters:
This dispute concerns more than one senator’s statement: it’s about who controls the follow-through on defense policy. Congress wrote the Taiwan Relations Act, authorized the resources, and appropriated the funds. If those dollars sit idle while diplomacy with Beijing continues, lawmakers from the president’s own party are signaling they’ll press the executive branch to honor the statute. For taxpayers, there’s a straightforward question: money approved for a defined purpose should be spent on it. For allies in the Indo-Pacific, credibility rests on whether American commitments survive summit-level diplomacy. From a center-right perspective, deterrence works best when it’s predictable, funded, and grounded in law. Wicker’s appeal to the Reagan precedent frames the issue in exactly those terms.