WASHINGTON >> President Joe Biden’s pick to be the top U.S. trade envoy is promising to work with America’s allies to combat China’s aggressive trade policies, indicating a break from the Trump administration’s go-it-alone approach.

In a written testimony for her confirmation hearing Thursday before the Senate Finance Committee, Katherine Tai, Biden’s choice for U.S. trade representative, said she would “prioritize rebuilding our international alliances and partnerships, and re-engaging with international institutions” to present Beijing with “a united front of U.S. allies.”

Fluent in Mandarin, Tai served several years as head of China enforcement at the trade representative’s office.

“I know firsthand how critically important it is that we have a strategic and coherent plan for holding China accountable to its promises and effectively competing with its model of state-directed economics,” Tai said.

Trump started a trade war with China, slapping taxes on $360 billion in Chinese imports in a fight over Beijing’s sharp-elbowed efforts — alleged to include cybertheft — to promote its own technology companies and challenge the United States in fields such as quantum computing and artificial intelligence.

Biden and his team have not said whether they will keep Trump’s tariffs. But the new administration is unlikely to be in a hurry to go easy on Beijing.

U.S. legislators and policymakers across the political spectrum have taken an increasingly harder line on China, frustrated by its trade practices, crackdown on dissent in Hong Kong and relentless pursuit of territorial claims in the South China Sea, among other things.

“We must recommit to working relentlessly with others to promote and defend our shared values of freedom, democracy, truth, and opportunity in a just society,” Tai said in her prepared remarks.

Far from working with allies on trade, Trump sparred with them instead, putting tariffs on imported steel and aluminum and threatening to target European cars, too.

Tai last served as the top trade staffer at the House Ways and Means Committee. She handled negotiations with the Trump administration over a revamped North American trade deal. Under pressure from congressional Democrats, Trump’s trade team agreed to strengthen the pact to make it easier for Mexican workers to form independent unions and demand better pay and benefits — decreasing the incentives for U.S. firms to move south of the border to take advantage of cheap and compliant labor.

Tai is considered a problem-solving pragmatist on trade policy, which can break down into an ideological divide between free traders and protectionists.