Where do each of the US Republican candidates stand on labor and unions?

Trump and seven other Republicans face the same challenge - US support for unions is at a high but the GOP historically doesn't condone them

In a bid to recapture the favor of blue-collar rust belt voters, Donald Trump traveled to Michigan on Wednesday to address a crowd of autoworkers at a rally near Detroit. The former president billed his prime-time speech as a gesture of solidarity with striking autoworkers.

The event doubled as a distraction from the night's Republican primary debate, where other candidates discussed how they would help striking autoworkers.