As Republicans and Democrats trade blame for the government shutdown that began at 12:01 a.m. on Wednesday, and pundits opine about which side is winning, it is easy to lose sight of the real stakes. What the two parties are fighting about is whether Americans should have access to affordable health care. President Trump is seeking to deprive millions of Americans of their health insurance, and Senate Democrats are refusing to acquiesce. The president and his congressional allies want to...