President Trump signed an executive order Thursday calling on states and cities to “remove vagrant individuals” from the streets — and rehouse homeless people, drug addicts, and those suffering from mental problems in “treatment centers.” The order redirects federal funding to finance “treatment centers, outpatient treatment and other facilities,” according to an official document viewed by The Post that describes the order. On average, more than 274,000 people were sleeping on the streets each night last year under then-President Joe Biden, the file describing the order says. “The overwhelming majority of these individuals are addicted to drugs, have a mental...