What he did: Indicated that he doesn't consider the congressional battle to overhaul health care over.
What he said: "The Democrats will make a deal with me on healthcare as soon as ObamaCare folds — not long."
Reaction: "Trump is now rooting for the Affordable Care Act to fail and it's important to think about what that means," said Sen. Elizabeth Warren, D-Mass.
What he did: Signed an executive order nullifying President Barack Obama's climate change efforts in hopes of reviving the coal industry.
What he said: "My action today is the latest in steps to grow American jobs."
Reaction: "This is not the time for any country to change course on the very serious and very real threat of climate change," said Erik Solheim of the United Nations Environment Program.
What he did: Vowed after listening to recovering addicts at a White House event to step up efforts to combat the nation's opioid addiction crisis.
What New Jersey Gov. Chris Christie said: "What we need to come to grips with is addiction is a disease and no life is disposable." Christie was named chairman of an opioid commission.
Reaction: "If we're only going to use a supply-side approach I doubt it'll be very effective," said Laura Hanen of the National Association of County and City Health Officials.
What he did: Eased military rules for preventing civilian casualties when counterterrorism strikes are carried out in Somalia.
What the Pentagon said: "The additional support provided by this authority will help deny Al-Shabab safe havens from which it could attack U.S. citizens or U.S. interests in the region," said Capt. Jeff Davis.
Reaction: "The downside is you risk potentially greater civilian casualties," said Luke Hartig, a former senior director for counterterrorism at the National Security Council during the Obama administration.
What he did: Said that ousted National Security Adviser Michael Flynn should ask for immunity before testifying to Congress about alleged ties between Russia and Trump's campaign.
What he said: "This is a witch hunt."
Reaction: "While Mr. Flynn's testimony is of great interest to our committee, we are also deeply mindful of the interests of the Justice Department in the matter," said Rep. Adam Schiff of California, the top Democrat on the House Intelligence Committee.
What he did: Reiterated his charge that Obama had him wiretapped.
What he tweeted: "When will Sleepy Eyes Chuck Todd and @NBCNews start talking about the Obama SURVEILLANCE SCANDAL and stop with the Fake Trump/Russia story."
Coming this week
Monday: Meets at the White House with Egyptian President Abdel-Fattah el-Sissi.
Thursday/Friday: Hosts Chinese President Xi Jinping at his Mar-a-Lago estate in Florida.