ANN ARBOR, Mich. (AP) — Pressing his economic case in an election year, President Barack Obama came to Michigan on Wednesday to praise the state’s ongoing effort to raise the minimum wage — and to accuse Republicans who oppose that step in Michigan and in Congress of standing in the way of prosperity for millions of Americans.

An upbeat Obama struck a distinctly partisan tone at the University of Michigan, a day after his administration received an unexpected burst of good news when his health care law beat expectations for its first year of enrollment. Addressing a crowd of about 1,400 in a stadium crowd that included many students, Obama cracked jokes about his GOP foes as he touted his plan to raise federal wages to $10.10 per hour.