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Sunday's Guests (Dec. 9): The GOP's latest deficit offer, the Jovan Belcher tragedy, Dan Savage on marriage equality and the Supreme Court

On Sunday's Up w/ Chris Hayes, we'll examine the Republicans' latest offer in their stand-off with President Obama over what we're calling "the fiscal curb." Then we'll discuss the knee-jerk speculation that immediately followed last week after Kansas City Chiefs linebacker Jovan Belcher shot and killed Kassandra Perkins, the mother of his three-month-old daughter, before turning the gun on himself in front of his head coach and general manager. And we'll also air a special one-on-one interview with Chris and Dan Savage, co-founder of the "It Gets Better" project and author of the sex advice column "Savage Love."

Steve Kornacki will be filling in for Chris Hayes. Joining him at 8 AM ET on msnbc will be:

Dan Savage (@fakedansavage), nationally syndicated sex advice columnist and co-founder of the It Gets Better Project

Neera Tanden (@neeratanden), president and CEO of  the Center for American Progress.

David Cay Johnston (@DavidCayJ), Pulitzer Prize winner and author of “The Fine Print: How Big Companies Abuse "Plain English" and Other Tricks to Rob You Blind” and distinguished visiting lecturer at the Syracuse University College of Law.

Mike Pesca (@pescami), sports correspondent for National Public Radio.

Avik Roy (@aviksaroy), former member of Mitt Romney's health care policy advisory group, senior fellow at the Manhattan Institute, writes The Apothecary, a blog on health-care and entitlement reform, for

David Cullen, author of the New York Times bestseller "Columbine."

Stephen Barton, survivor of the Aurora, Colorado shooting and outreach policy associate for Mayors Against Illegal Guns.

Joan Walsh (@joanwalsh), msnbc political analyst, editor at large of, and author of "What's the Matter with White People? Why We Long for a Golden Age that Never Was."