"The United States should not undertake a kinetic strike before the U.N. inspectors complete their work," he said in a statement Friday. "And that the impact of such a strike would be weakened if it does not have the participation and support of a large number of nations, including Arab nations."
Still left are lawmakers including Sen. Rand Paul, R-Ky., who protested on libertarian grounds of non-intervention. More than 100 members had written to the president/a> imploring him to seek congressional approval.
Speaker Boehner voiced approval for president's move to seek authorization in a statement following the announcement.
"Under the Constitution, the responsibility to declare war lies with Congress," he wrote. "We are glad the president is seeking authorization for any military action in Syria in response to serious, substantive questions being raised. In consultation with the president, we expect the House to consider a measure the week of September 9. This provides the president time to make his case to Congress and the American people."
The debate has also opened up new discussion of the 1973 War Powers Act, which gives the commander-in-chief the authority to conduct military activity for 60 days without a formal declaration of war from Capitol Hill. Congress has not formally declared war since World War II: The Korean War, Vietnam, Gulf War, Iraq, Afghanistan, and most recently Libya were all conducted without an official declaration.