WASHINGTON — With his jobs plan stymied in Congress by Republican opposition, President Obama on Monday will begin a series of executive-branch actions to confront housing, education and other economic problems over the coming months, heralded by a new mantra: “We can’t wait” for lawmakers to act.

According to an administration official, Mr. Obama will kick off his new offensive in Las Vegas, ground zero of the housing bust, by promoting new rules for federally guaranteed mortgages so that more homeowners, those with little or no equity in their homes, can refinance and avert foreclosure.

And Wednesday in Denver, the official said, Mr. Obama will announce policy changes to ease college graduates’ repayment of federal loans, seeking to alleviate the financial concerns of students considering college at a time when states are raising tuition.

The president’s announcements will bookend a three-day Western trip during which he also will hold fund-raising events in the two cities — both Nevada and Colorado are election battlegrounds — as well as in Los Angeles and San Francisco.