The Justice Department calls the ruling "a victory for American consumers" because the merger would have reduced competition in the health insurance market.
Trump's tweet, which said the company was unfair to his daughter, highlights concerns about the line between his official duties and his family's businesses.
Remarks by Neil Gorsuch, the president's nominee to the Supreme Court, about Trump's put-downs of judges were quoted by Democratic Sen. Richard Blumenthal, who met with Gorsuch about the nomination.
Sen. Elizabeth Warren was barred from participating in the debate on Sen. Jeff Sessions' nomination for Attorney General after she quoted past criticism of him from Coretta Scott King and Ted Kennedy.
In defending his executive order restricting travel, President Trump accused the courts of being political. It's not the first time he's criticized the judicial system or individual judges.
NPR's Kelly McEvers interviews veteran Andrew Slater and former Iraqi interpreter Nawaf Ashur about why they, along with other American military veterans and refugees, are visiting members of Congress to talk about the travel and refugee ban.
President Trump says Vice President Mike Pence will lead an investigation on voter fraud, though it's not clear when that will happen. Meanwhile, a House committee has voted to eliminate an agency that works to improve how elections are run.
There are now more people who think Obamacare is a good idea than those who don't. It's basic human nature: People tend to get upset if they think they are about to lose something they feel entitled to or previously had. It's also the idea that fueled Donald Trump's electoral base, and ironically, now fuels those who are opposed to him.
President Trump inherited 41 "law of war" captives in Guantanamo, well below the 242 there when Barack Obama took office. A visit to the prison camps finds them ready for more occupants.