Joe Biden will join United Auto Workers (UAW) on the picket line in the Detroit area of Michigan on Tuesday in what will be the first time any US president has stood in solidarity with people who are on strike.

President Biden plans to visit Michigan Tuesday to support striking auto workers on the picket line, while former President Donald Trump is scheduled to address auto workers in the state on Wednesday.

Experts in presidential and U.S. labor history say they cannot recall an instance where a sitting president has joined an ongoing strike

Rep. Alexandria Ocasio-Cortez (D-N.Y.) applauded President Biden’s trip — which labor experts believe will be the first by a sitting president in at least 100 years — as a “historic event.”