Sheriff Tom Dart worked with the University of Chicago’s Steven Levitt to create a program that could “match” people on EM to reported crimes.

The fallout from the F.D.A.’s rejection of a new treatment for PTSD worries researchers and experts who fear other psychedelic drugs in the pipeline could be jeopardized.

The incoming administration said it would not rely on outside groups to carry out its plan to deport millions of immigrants, but militias have a long record of inserting themselves into patrolling the...