"This is a first for me," says Rabbi Andy Dubin, as he sits down on a collapsible chair opposite Ann Justi and Don Boyer. The three of them are in the compact living room of Boyer's apartment in Yonkers, N.Y., standing between the sofa, TV and writing desk. Dubin is in his socks, having shed his snow-caked boots out in the hallway. Boyer and Justi are getting married. Never mind the blizzard-like conditions that kept one set of friends home, and a bad cold that waylaid another. They're determined to tie the knot this afternoon. So they recruited their landlord from downstairs and a public radio reporter to be witnesses. Why the rush? Boyer and Justi have been listening to the news. They were planning to get married in the fall, but it occurred to them that there's no knowing what could happen to health insurance if the Trump administration and congressional Republicans dismantle the Affordable Care Act. Justi has several preexisting conditions — osteoporosis, asthma, allergies and