Gail Collins: Who’s the best first lady?

Already sorta looking forward to the Republican convention next week. The White House says Melania Trump will be speaking to the American people from the Rose Garden on Tuesday.Chances are her speechwriters won’t lift any lines from Michelle Obama like they did four years ago. Although if you hear Melania urging her audience to “grab our comfortable shoes, put on our masks, pack a brown-bag dinner and maybe breakfast, too,” when they go to the polls, you will know what happened