MILWAUKEE — President Obama on Monday renewed his call to raise the federal minimum wage and to protect the right to equal pay for women as the midterm elections come into sight.

In spite of opposition from Republicans, Mr. Obama said, addressing a crowd of about 6,000 people gathered in Milwaukee at a festival hosted by the local A.F.L.-C.I.O., his goal is to make sure all Americans can meet simple goals, like being able to pay their bills and send their children to school.

“There is no denying the simple truth: America deserves a raise,” he said.

Hailing examples set by employers like Kentucky State University, whose president took a pay cut to give raises to his lowest-paid workers, Mr. Obama said Congress needed to catch up to the businesses and other institutions — as well as 13 states and the District of Columbia — that have already acted to raise their minimum wage.

Mr. Obama also referred to his executive order in February requiring that federal contractors in 2015 increase their minimum hourly wage to $10.10 from $7.25.