“Obama’s not saying he has the right to defy a Congressional statute,” said Richard H. Pildes, a New York University law professor. “But if the legislative path is blocked and he otherwise has the legal authority to issue an executive order on an issue, they are clearly much more willing to do that now than two years ago.”

The Obama administration started down this path soon after Republicans took over the House of Representatives last year. In February 2011, Mr. Obama directed the Justice Department to stop defending the Defense of Marriage Act, which bars federal recognition of same-sex marriages, against constitutional challenges. Previously, the administration had urged lawmakers to repeal it, but had defended their right to enact it.

In the following months, the administration increased efforts to curb greenhouse gas emissions through environmental regulations, gave states waivers from federal mandates if they agreed to education overhauls, and refocused deportation policy in a way that in effect granted relief to some illegal immigrants brought to the country as children. Each step substituted for a faltered legislative proposal.

But those moves were isolated and cut against the administration’s broader political messaging strategy at the time: that Mr. Obama was trying to reach across the aisle to get things done. It was only after the summer, when negotiations over a deficit reduction deal broke down and House Republicans nearly failed to raise the nation’s borrowing limit, that Mr. Obama fully shifted course.

First, he proposed a jobs package and gave speeches urging lawmakers to “pass this bill” — knowing they would not. A few weeks later, at the policy and campaign strategy meeting in the White House’s Roosevelt Room, the president told aides that highlighting Congressional gridlock was not enough.

“He wanted to continue down the path of being bold with Congress and flexing our muscle a little bit, and showing a contrast to the American people of a Congress that was completely stuck,” said Nancy-Ann DeParle, a deputy chief of staff assigned to lead the effort to come up with ideas.

Ms. DeParle met twice a week with members of the domestic policy council to brainstorm. She met with cabinet secretaries in the fall, and again in February with their chiefs of staff. No one opposed doing more; the challenge was coming up with workable ideas, aides said.