US President Joe Biden has made history by becoming the first modern US president to join a picket line with striking car workers. He showed his support for the workers' demand for a 40% pay rise. Biden traveled to Wayne, Michigan, to speak with the striking autoworkers, marking the first time a sitting president has joined a union picket line. The move is seen as a reflection of the revitalized US labor movement and its broad public support. This action has forced politicians and others to choose sides between workers and CEOs. Biden expressed his support for the workers, saying they deserve more than they are currently being paid. This show of support by the president is significant and highlights the importance of the labor movement in the US.