Updated at 7:20 a.m. ET

Britain's Conservative Party has chosen Boris Johnson to become the country's next prime minister, replacing the pragmatic and sometimes colorless Theresa May with a bombastic populist who favors a no-deal Brexit.

Johnson walked to the podium inside London's Queen Elizabeth II Centre, thanking his opponent, Foreign Secretary Jeremy Hunt, and May.

Former special counsel Robert Mueller is testifying before Congress on Wednesday, and lawmakers have so many questions they may not have enough time to ask them all.

The House judiciary and intelligence committees have scheduled hearings for 8:30 a.m. and noon.

Majority Democrats and minority Republicans are expected to try their utmost to get the most good they can from Mueller — in very different ways.

Dozens of coal miners are expected on Capitol Hill on Tuesday, where they'll press federal regulators and members of Congress to address the epidemic of deadly progressive massive fibrosis, the advanced stage of black lung disease.

It's been seven years since passing boaters found Dawn Day's body floating in a lake on the high plains of Wyoming. Sitting next to each other on the couch, a warm breeze coming in through the screen door, her dad Gregory Day and her aunt Madeleine Day miss Dawn's laughter.

"She was crazy," Madeleine Day says.

"Crazy in a good way, huh?" Gregory Day says. "Make you laugh."

"That's what she did. She always wanted everybody to be happy," agrees Madeleine Day. And she says it was trying to make people happy that kept Dawn from leaving an abusive boyfriend.