Three years ago, San Francisco launched an experiment to give 150 pregnant Black and Pacific Islander women $1,000 a month, no strings attached, for the duration of their pregnancy and six months after the birth. *** Now, that effort is almost certainly about to come to a screeching halt. And another guaranteed income program to assist San Francisco’s transgender residents — who are 18 times more likely to experience homelessness than the general population — already has been shut down. Participants were only given a month’s notice before being cut off. *** So, how could two successful programs, lauded by...