From The Weekly Standard:
“The use of these weapons has to be responded to and only the United States has the capability and capacity to stop Assad and to warn others around the world that this type of behavior is not going to be tolerated,” said Boehner after meeting with Obama. “I appreciate the president reaching out to me and my colleagues in the Congress over the last couple of weeks. I also appreciate the president asking the Congress to support him in this action. This is something that the United States as a country needs to do. I’m going to support the president’s call for action. I believe my colleagues should support this call for action.”
Update: Eric Cantor is also planning to support the President as well.