The Senate Select Committee on Intelligence wants answers about the mysterious “Havana Syndrome”—a neurological sickness that hit U.S. embassy workers in Cuba and elsewhere. Was it a weapon? Who’s responsible? And how to treat dozens of sufferers? We talk to Dr. Linda Birnbaum, former director of the National Institute of Environmental Health Sciences, who was appointed to a State Department-commissioned committee to investigate the phenomenon. She discusses what her committee did, and didn’t, find out. We also talk to Gary Miliefsky, a founding member of the Department of Homeland Security and publisher of Cyber Defense Magazine. Miliefsky doesn’t think it’s mysterious at all and explains why he’s sure U.S. diplomats were targets of an ultrasonic weapon attack—and why Cuba must be held accountable. Then, in our first America Q&A we ask: Should there be any limits on the number of immigrants allowed into the country? Next, anti-racism training in the …