Lawmakers are appealing to President Joe Biden to use the remaining time in his term to work for the release of Americans who are “wrongfully detained” in China, saying U.S. officials need to do more to help secure their freedom.

“There are more Americans wrongfully detained in China than in any other country. American citizens are serving long prison terms in China; most were sentenced with acute due process irregularities or on spurious charges,” Republican Rep. Chris Smith of New…