First, Michael Flynn is out as National Security Adviser. I always thought he was the most dangerous member of Trump's administration, combining a combative militarism with a weak relationship to the facts. His two hand-picked deputies are also said to be on the way out. Of course his replacement may turn out to be bad, too, but it will be hard to find anyone as dangerous as Flynn.
That Flynn fell because he lied about unauthorized back-channel talks with the Putin regime is also gratifying; it's nice to know that there are limits to how much schmoozing with dictators Trump will tolerate.
Second, Republicans in Congress are backpedaling hard from Obamacare repeal. Some are openly talking about "repair" instead of "repeal," and many others are insisting that a new plan be in place before the Affordable Care Act is undone. Let's hope they step up here and do some serious work on a new plan. The ACA is far from a perfect law and there are other ways to do what it does, some of which might work better. People who know Paul Ryan say he is a serious policy guy, and now is his chance to prove it. Honestly right now it looks like nothing will happen at all this year.