(CNN) - U.S. President Barack Obama said Saturday that the United States "should take military action against Syrian targets" over its alleged use of chemical weapons, but added that he will seek congressional authorization for the move.  Secretary of State John Kerry joins us to discuss President Obama's response to the situation in Syria.

In a televised address from the White House Rose Garden, the president appealed for congressional leaders to consider their responsibilities and values in debating U.S. military action over Syria's alleged chemical weapons use. "Today I'm asking Congress to send a message to the world that we are united as one nation," he said.

Obama said he had spoken with top congressional leaders, and that they had agreed to schedule a debate when Congress returns to Washington on September 9.

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Democratic Congressman Eliot Engel  and Republican Congressman Scott Rigell, weigh in on President Obama's plan to seek authorization from Congress to act in Syria.

We'll also have Insight from former Centcom Commander General Anthony Zinni, Middle East analyst Robin Wright and Jeremy Bash, former Chief of Staff to Leon Panetta.

A number of members of the President's own party are skeptical about U.S. missile strikes. We'll speak with one of them, Senator Chris Murphy.

Plus, from challenges abroad to headaches at home, the President braces for a fall of fights with Congress, including over his signature piece of legislation. Our political panel of Donna Brazil, David Frum, Cornel Belcher and Ross Douthat weighs in on whether Bill Clinton can save Obamacare.

Watch us Sunday 9 A.M. Eastern and Pacific.

CNN's Tom Watkins contributed to this report.