10 things you need to know today: March 13, 2016

1. Marco Rubio, Ted Cruz pick up weekend wins

Marco Rubio edged out John Kasich in Saturday's Republican presidential caucus in Washington, D.C, earning 37 percent support and 10 delegates to Kasich's nine. Donald Trump and Ted Cruz didn't pick up any delegates. Cruz easily took Wyoming's county conventions with 66 percent support, snagging nine delegates. Rubio and Trump earned one apiece. Cruz also won one delegate in Guam on Saturday. On the Democratic side, Hillary Clinton took 54 percent support in the Northern Mariana Islands caucus Saturday, winning four delegates to Bernie Sanders' two.

Politico The Huffington Post

2. Donald Trump blames Bernie Sanders supporters for rally protests

Republican presidential frontrunner Donald Trump blamed Bernie Sanders' supporters for protests at his canceled Chicago rally on Friday. "You know, Bernie was saying Mr. Trump should speak to his crowd," Trump said Saturday. "You know where they come from? Bernie's crowd. They're Bernie's crowd." In response, Sanders called Trump a "pathological liar."

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CNN

3. Germanwings crash investigators push for tighter mental health regulations

Nearly one year after Germanwings co-pilot Andreas Lubitz intentionally crashed a jet into the French Alps, investigators revealed a doctor had referred Lubitz to a psychiatric clinic just two weeks before the crash, but Lubitz didn't pass on the warnings. He also had a history of being treated for depression and suicidal tendencies. Investigators urged global aviation officials to draft new rules requiring doctors to alert authorities when a pilot's mental health could endanger public safety.

The Associated Press

4. Hillary Clinton apologizes for praising Reagans on AIDS response

Democratic frontrunner Hillary Clinton apologized Saturday for saying President and Nancy Reagan "started a national conversation" on HIV and AIDS. "To be clear, the Reagans did not start a national conversation about HIV and AIDS," she wrote on Medium. "That distinction belongs to generations of brave lesbian, gay, bisexual, and transgender people, along with straight allies, who started not just a conversation but a movement that continues to this day." The Reagans notoriously kept quiet in the first years of the disease.

Medium

5. Police charge CBS News reporter covering canceled Trump rally with resisting arrest

CBS News reporter Sopan Deb, who covered the canceled Donald Trump rally in Chicago on Friday night, was reportedly thrown on the ground and handcuffed by Illinois State Police. He was charged with resisting arrest, though the video footage available doesn't show him resisting. He also identified himself as a credentialed journalist. Deb has since been released.

CBS News

6. Rubio: It's 'getting harder every day' to support Donald Trump as nominee

Following Donald Trump's campaign canceling a Chicago rally over security concerns Friday, a dejected Sen. Marco Rubio (R-Fla.) told MSNBC he would still back Trump should he become the Republican Party's nominee. "I still, at this moment, continue to intend to support the Republican nominee, but it's getting harder every day," he said Saturday. In a March 3 debate, Rubio, Ted Cruz, and John Kasich all pledged to back Trump should he win the nomination.

MSNBC

7. Angela Merkel faces test in German regional elections

German voters participated in three regional elections Sunday that could impact Chancellor Angela Merkel's efforts to reach a deal between the European Union and Turkey that would ease the flow of migrants across the continent. Merkel has notably welcomed migrants into Germany more warmly than many of her European colleagues, a fact that could hurt her conservative Christian Democrats party versus the anti-immigration Alternative for Germany.

Reuters

8. ISIS fighters reportedly give sex slaves birth control

Islamic State fighters issue birth control to their sex slaves — sometimes two or three different kinds at once — according to a New York Times report. An ISIS law dictates that enslaved women can only be raped if they aren't carrying children. Among more than 700 rape victims treated by one gynecologist at a United Nations-backed clinic, there was only a 5 percent pregnancy rate, which professionals consider unusually low.

The New York Times

9. Suspected snowmobile assault kills 1 Iditarod dog, injures 2 others

A snowmobiler allegedly assaulted two Iditarod Trail Sled Dog Race teams Saturday, killing one dog and seriously injuring two others. Arnold Demoski, 26, was charged with assault, reckless endangerment, reckless driving, and criminal mischief. Both mushers believed the attack was intentional, but Demoski denied that in an interview, saying instead that he drove in an alcoholic blackout.

Los Angeles Times

10. March Madness kicks off with Selection Sunday

The NCAA is holding Selection Sunday beginning at 5:30 p.m. ET. The 68 selections for the men's tournament will be announced in a two-hour broadcast. The teams on the bubble include Michigan, Alabama, Florida, Ohio State, and George Washington. Watch the process go down on CBS or NCAA.com.

NCAA USA Today