WASHINGTON — President-elect Joseph R. Biden Jr. is predicted to pick Katherine Tai, the chief commerce lawyer for the Home Methods and Means Committee, as the US commerce consultant, a key publish that may bear duty for implementing America’s commerce guidelines and negotiating new buying and selling phrases with China and different nations, in keeping with folks conversant in the plans.

Ms. Tai has garnered robust help from colleagues in Congress, who credit score her with serving to to wrangle an unruly collection of politicians and curiosity teams in negotiations to move the revised North American Free Commerce Settlement. From 2007 to 2014, Ms. Tai labored for the Workplace of the US Commerce Consultant, the place she efficiently prosecuted a number of instances on Chinese language commerce practices on the World Commerce Group.

If confirmed, Ms. Tai, who’s Asian-American, can be the primary girl of coloration to function the U.S. commerce consultant, a cabinet-level official who carries the rank of ambassador.

Ms. Tai’s choice was earlier reported by Politico and The Wall Street Journal.

Though Mr. Biden has mentioned he doesn’t intend to start negotiating new free-trade agreements till he has made “major investments here at home and in our workers,” his commerce consultant will nonetheless have a lot to do. These duties are more likely to embody guaranteeing that American commerce guidelines are adequately enforced and that they promote relatively than impede different elements of Mr. Biden’s agenda, together with combating local weather change and inspiring home funding, for instance by means of augmenting Purchase American applications.

Congressional Democrats have fought for Ms. Tai to be appointed partially as a result of they consider she would play a significant function in ensuring that the phrases of the United States-Mexico-Canada Settlement, which replaced NAFTA this year, are enforced. That features bringing new commerce instances in opposition to Mexican factories that violate labor guidelines, and guaranteeing that Mexico will observe by means of with bold reforms to its labor system.

As chief counsel for the Methods and Means Committee, Ms. Tai performed a key function in crafting the Democratic calls for for last modifications to U.S.M.C.A., which was negotiated by the Trump administration. In that capability, she balanced the competing demands of labor unions, environmental teams, company lobbyists and the administration, and helped to hammer out a deal that handed each homes of Congress by a large margin.

In a November letter to Mr. Biden, 10 feminine Home Democrats wrote that Ms. Tai’s central function in that negotiation “makes her uniquely certified to guide implementation and enforcement efforts” as the subsequent commerce consultant.

“Ms. Tai is aware of each software accessible to carry Mexico and Canada accountable,” the lawmakers wrote.

Although generally a lower-profile place, the publish of commerce consultant has taken on larger significance underneath President Trump, who has used the workplace to impose substantial tariffs in opposition to overseas nations and negotiate a collection of commerce offers, each small and huge.

Mr. Biden’s high commerce negotiator will probably be chargeable for coping with a lot of that legacy, together with serving to to resolve whether or not to proceed levying tariffs on Chinese language items, and whether or not to proceed granting sure corporations exclusions from these tariffs. A lot of these exclusions are set to run out on Dec. 31, and it stays unclear whether or not Mr. Trump plans to increase them.

The brand new commerce consultant may also be chargeable for reshaping the workplace to suit Democratic priorities, like rising protections for employees, mitigating local weather change and elevating requirements for client protections. Mr. Biden’s decide may also be chargeable for rebuilding buying and selling relations which were strained by Mr. Trump’s aggressive strategy, together with with Europe, Canada, Japan and Mexico.

Supporters say Ms. Tai can also be uniquely positioned to handle financial challenges from China, thought to be America’s greatest supply of competitors within the commerce sphere.

Along with litigating commerce disputes in opposition to China on the World Commerce Group over points together with subsidies and export restraints, Ms. Tai labored on China-related points throughout her time within the Home, together with methods to reshore American provide chains and legislation to bar imports made with pressured labor from Uighurs and different minorities in China.

Ms. Tai has a background in China, having served as a instructing fellow there within the late Nineties and talking fluent Mandarin Chinese language.

Within the Home, she additionally led an effort to take a look at the legacy of racial injustice in U.S. commerce coverage, and the way positive aspects from commerce may very well be made extra inclusive.

Thomas Kaplan and Emily Cochrane contributed reporting.