Why Biden and Trump Are Courting Striking Autoworkers

The president and his leading Republican rival are heading to Michigan to address members of the U.A.W., whose political clout is growing. In an extraordinary show of support, President Biden plans to join striking autoworkers on the picket line in Michigan on Tuesday. It comes a day before Donald Trump is expected to speak to union members in Detroit instead of participating in the second Republican primary debate. The competing visits come as the two home in on battleground states ahead of next year’s election. But their appearances also reveal...