DETROIT — Former President Bill Clinton is warning organized labor that Donald Trump’s economic policies would cause millions of Americans to lose their jobs.

Clinton campaigned Monday for his wife, Hillary Clinton, at a United Auto Workers picnic in Detroit after walking in a Labor Day parade.

He said that when the country last adopted Republican policies that cut taxes on the rich and raised the debt, “it didn’t work out too well for us.”

Bill Clinton says his wife’s economic plan would create 10.5 million jobs while Trump’s would cut 3.5 million jobs. He is urging union members to support Hillary Clinton “because she has the best ideas.”

He questions Trump’s leadership and says his visit last week to Mexico “damaged America in every serious country in the world.” He says Trump played nice only to return home “to dump on them” for his own political benefit.