President Trump just signed an order that will expand detention at Guantánamo. We can’t let him send more people there to spend their lives behind bars without ever being convicted of a crime. Bigger picture, President Trump has threatened peaceful dissent and attacked those who disagree with him; we can’t let him claim immense powers in the name of “national security”—powers he could use to abuse human rights. We are all at risk. Tell your Members of Congress to speak out.