ABC News

As the House slows down movement on comprehensive immigration reform, House Republicans ramp up efforts to delay Obamacare while Senate Democrats threaten to go nuclear over the filibuster. Can a piecemeal approach move immigration reform forward? Will the House ever consider a path to citizenship? And will a battle over filibuster rules lead to more acrimony in an already-dysfunctional Congress?

Sunday on "This Week," key members of the House and Senate debate those contentious issues, with Rep. Karen Bass, D-Calif.; Rep. Tom Cole, R-Okla.; Sen. Orrin Hatch, R-Utah; and Sen. Amy Klobuchar, D-Minn. And the powerhouse roundtable debates all the week's politics, with Wall Street Journal editorial page editor Paul Gigot; Politico senior political reporter Maggie Haberman; New York Times Magazine chief national correspondent Mark Leibovich, author of the new book "This Town"; and television and radio host Tavis Smiley.

Plus, George Stephanopoulos goes one-on-one with former New York Gov. Eliot Spitzer on his decision to re-enter political life as he joins the race for New York City comptroller.

And in our "Sunday Spotlight," ABC News' Bob Woodruff is there as Malala Yousafzai, the Pakistani girl shot last year for attending school, addresses a U.N. youth assembly on her 16 th birthday to call for education access for all children.

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