What to know

• The actions were a clear escalation of Trump's long-running efforts to restrict news coverage by journalists he finds objectionable, and the latest test of First Amendment protections in the United StatesS1
• What began as a routine entry through the White House security checkpoint turned into a dramatic moment for CNN reporter Betsy Klein on Saturday (local time), when her press credentials failed to grant her access and a Secret Service agent told her that her ba...S2