Mo., introduced a bill to raise the federal minimum wage to $15 per hour, making him a rare congressional Republican to endorse the historically liberal cause.

GOP Sen. Josh Hawley's position on the minimum wage aligns him with some of the Senate's most liberal members.

The federal minimum wage is $7.25 an hour, the lowest since the 1940s when adjusted for inflation. Sen. Welch wants to raise it to $15 an hour.