Nov. 22: In the wake of the chambers historic vote to begin deliberations, Democrats spent Sunday sparring over how best to fix the nation's health care system. NBCs Mike Viquiera reports.(Nightly News)

Nov. 22: Doctors and lawmakers took to the airwaves Sunday amid fresh concerns and criticism over new mammogram recommendations.(Nightly News)

Nov. 22: NBCs Lester Holt speaks with CNBCs John Harwood.(Nightly News)

Nov. 22: The lawmaker from the nation's most famous Roman Catholic family claims hes been barred from receiving communion because of his support for abortion rights. NBCs Rehema Ellis reports.(Nightly News)

Nov. 22: According to the lawyer for one of the accused terrorists, the five men facing trial will plead not guilty so they can voice their criticisms of U.S. foreign policy. NBCs Lester Holt reports.(Nightly News)

Nov. 22: Mudslides triggered by heavy rains and major flooding caused a house to collapse into a pile of rubble. NBCs Lester Holt reports.(Nightly News)

Nov. 22: Besieged by more than 12 inches of rain in just 24 hours, stunned residents fled to their rooftops in an effort to escape the raging waters. NBCs Stephanie Gosk reports.(Nightly News)

Nov. 22: With millions expected to take to the air, road and rails this week, the holiday rush is officially on. But as NBCs Tom Costello reports, no matter how you travel, virtually everyone will be paying more.(Nightly News)

Nov. 22: Naturalist Jeff Corwin documents the efforts of scientists to revive Indonesias critically endangered Sumatran orangutan population.(Nightly News)

Nov. 22: The film blew past decidedly mixed reviews to rake in more than $140 million over the weekend, making it the third-largest film debut ever. NBCs Lester Holt reports.(Nightly News)