I think we all need to have an unemotional bipartisan discussion of guns and regulations. I'm all for personal freedom BUT the free-for-all we have now isn't working, a line needs to be drawn somewhere. I don't know where that is. I have no problem with people owning guns for hunting, target shooting or collecting, after that things aren't so clear. When 2a was written technology was much different than it is now.
Sorry, but I strongly feel birth defects should be an exception. Much of the testing that reveals those issues can't be done until around 20 weeks. The tests have risks, amniocentesis can be done between 14 and 20 weeks, and the later the safer. I'm glad your friends were lucky, but not everyone is. And not all families have the financial resources or insurance to be able to handle it.
My neighbors had a little girl with a serious genetic defect - in their case they didn't test because they thought only one of them was a carrier. Turned out the other one had a false negative on their test

... The child lived a couple of years, most of them on a respirator, in a wheelchair and fed through a tube, (I think she had an osteomy too), had frequent seizures, couldn't speak or move much. It was rough on them and their two older boys, and they were financially in a pretty good place. I can't imagine a lower income couple without decent insurance going through that.
Now, if someone wants to implement universal healthcare, that might be a different matter, but the GOP doesn't seem to care much about lives after they're born.
(PS they named that bill deliberately to get an emotional reaction. There are medical ways to ensure there is no pain to the fetus.)