This bill, known as the Undertaking Negotiations on Investment and Trade for Economic Dynamism Act or the UNITED Act, aims to provide the President with specific authority to negotiate and enter into a comprehensive trade agreement with the United Kingdom. Congress expresses its belief that such an agreement would strengthen the United States' economy, improve living standards, and advance strategic interests by fostering mutually beneficial economic relationships with a key ally.

The legislation mandates that the President seek to initiate negotiations with the United Kingdom within 180 days of the Act's enactment, focusing on tariff and non-tariff barriers across various sectors. The authority for the President to enter into such a comprehensive trade agreement is set to terminate on March 1, 2029. While the President may modify existing duties to implement the agreement, there are specific limitations, such as not reducing duties below 50 percent of their current rate for most products or increasing any duty above its current level.

To ensure alignment with congressional priorities, the bill requires the President to consult with Congress throughout the negotiation process and notify them of intent to enter an agreement. Any implementing bill for the trade agreement would qualify for expedited consideration under trade authorities procedures, provided it is submitted before March 1, 2029. Furthermore, the bill explicitly states that all requirements of the Bipartisan Congressional Trade Priorities and Accountability Act of 2015 must be met, and any agreement must honor the Good Friday Agreement to advance peace and stability in Ireland and Northern Ireland.