During a Washington state visit, President Trump proposed a $14 billion arms package to China, a move that has drawn sharp criticism from lawmakers on both sides of the aisle.
Ambassador David Perdue confirmed the offer, saying Trump had asked Xi whether China might want U.S. weaponry.
The proposal follows a pause in the sale after a May summit where China demanded a halt, citing national security concerns.
Republican and Democratic members of Congress have expressed alarm over delayed aid to Taiwan and the potential leakage of U.S. military technology.
The United States remains legally bound to supply Taiwan with defensive equipment, yet no explicit commitment to military intervention has been made.
The sale remains on hold as Congress reviews the proposal and weighs broader strategic implications.