Trump's attack on NBC comes after the Treasury barred journalists from The New York Times, The Wall Street Journal and Bloomberg from attending the G20.

The President is unhappy with suggestions by the host of "Meet The Press" that his endorsements are becoming less effective as his poll numbers slump.

US President Donald Trump on Sunday said in a post on Truth Social that NBC's Kristen Welker will be reported to the FCC for "rebuke or punishment", after he said…