Unions’ awkward tariff dilemma

President Donald Trump invites a United Auto Worker member to speak during a trade announcement event. | Chip Somodevilla/Getty Images

President Donald Trump’s tariffs have drawn a lot of opposition — from economists, businesses, Wall Street, and the majority of Americans.

Yet Trump has received support from a seemingly unlikely source: Shawn Fain, president of the United Auto Workers (UAW) union, who staunchly backed former Vice President Kamala Harris’s presidential campaign and previously...