The Taiwan Assurance Act 2020 was passed by both houses of the Senate and House of Representatives as part of an omnibus appropriations law for fiscal year 2021, and was signed into law by then-President Donald Trump at the end of the year.

At that time, Congress required the US Secretary of State to review and submit reports on the relevant norms of US-Taiwan relations in the "Taiwan Assurance Act", "including the occasional memorandum called "Guidelines on Relations with Taiwan" (Guidelines on Relations with Taiwan) and related documents ” and reissued this guidance to departments and agencies of the Administration.

The "Guidelines for Relations with Taiwan" is an internal State Department regulation that regulates the details and limitations of the U.S. administration's contact with government departments and officials in Taiwan that do not have formal diplomatic relations.

Wagner believes that for decades, in order to curry favor with China, high-level officials of the US executive branch, including high-level military leaders, have not been allowed to visit Taiwan, and Taiwan’s top leaders have also been forbidden to come to the United States. A long list of complex and artificial requirements". She said then-Secretary of State Mike Pompeo announced in January 2021 that the U.S. government would be fully lifted from self-imposed restrictions, but Wagner’s opposition to President Joe Biden’s administration had been in conflict with Taiwan’s officials since taking office. Concerned about the practice of contact.

Representative Wagner issued a statement when he introduced the "Taiwan Assurance Implementation Act" at the end of February, saying: "I was very concerned when the Biden administration decided to reimpose certain restrictions on contact between US and Taiwan officials. It would embolden China's Communist Party and weaken America's support for our ally Taiwan."

In that statement, she said that when Congress passed the Taiwan Assurance Act in 2020, Congress made it very clear that the United States must dismantle these outdated and unnecessary restrictions on US-Taiwan engagement.

The bill passed by the House of Representatives on Wednesday made some textual amendments to the Taiwan Assurance Act of 2020, requiring the Secretary of State to conduct periodic reviews and update reports on the self-imposed restrictions".