The president, with his letter, appeared to meet the requirements of the 1973 War Powers Resolution, which says only that in cases where the president doesn't seek prior approval from lawmakers, the president must notify Congress within 48 hours of committing armed forces to military action and puts a 60 day deadline on such actions.
House Speaker John Boehner doesn't believe the president always needs congressional approval to go take military action, a spokesman for the Ohio Republican said. However, "members of Congress from both parties, as well as the American people, are demanding the administration do a better job answering some basic questions about the scope and purpose of our mission in Libya, America's role, and how it will be achieved," said the spokesman, Brendan Buck.
Michigan Republican Mike Rogers, chairman of the House Intelligence committee, who was part of a group of lawmakers who met with the president before the Libya action, offered his support after the meeting. Mr. Rogers said: "Bipartisan Congressional leaders met with the President at the White House today to hear his plan, and I like what I heard. It is in America's strategic interest to support regional stability, and to prevent the use or diversion of Libya's large chemical weapons stockpile while allowing those who aspire to be free a chance to have their legitimate grievances heard."
—Siobhan Hughes contributed to this article.
Write to Evan Perez at evan.perez@wsj.com