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In a "This Week" Sunday exclusive, ABC Chief White House Correspondent Jonathan Karl goes one-on-one with Sen. Marco Rubio, R-Fla., on the debate over immigration reform and U.S. aid to rebels in Syria.

The Obama administration announced Thursday that it will begin providing military aid to Syrian rebels, after evidence proving that Syrian troops had used chemical weapons in the country's deadly civil war. How much will the aid help the rebels, and how far should the U.S. go in intervening in the Syrian conflict?

And as the Senate begins debate on comprehensive immigration reform, will a flurry of amendments and political opposition stall action? Can the Senate and House reach compromise on key issues like border security to reach a comprehensive deal? Sen. Marco Rubio, a key player in the immigration talks, answers those questions and more, only on "This Week."

Then, the "This Week" foreign policy roundtable debates the U.S. role in Syria, with ABC News' George Will, ABC News Chief Global Affairs Correspondent Martha Raddatz, former Defense Department and CIA chief of staff Jeremy Bash, and Bloomberg View columnist Jeffrey Goldberg.

And the powerhouse political roundtable debates all the week's politics, with ABC News' George Will, Democratic strategist and ABC News contributor Donna Brazile, former House Speaker Newt Gingrich, and Rep. Luis Gutierrez, D-Ill.

Plus, in a special Father's Day Sunday Spotlight, former Florida Governor Jeb Bush discusses the influence of his father, former President George. H.W. Bush, who turned 89 this week.

See the whole political picture, Sunday on "This Week."

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