Trump made the implied threat after taking to Twitter to angrily deny reports that he had asked to dramatically increase in America's nuclear stockpile, calling it "made up".
President Donald Trump on Wednesday floated the idea of targeting the licenses of TV networks that report "fake news" about him. Just last week, the network reported on rifts between the president and Secretary of State Rex Tillerson, claiming Tillerson considered resigning over the summer and once called the president a "moron". "Bad for country!" Trump said in a Wednesday tweet at 9:55 am ET. Pure fiction, made up to demean.
Trump was a real-estate mogul before taking office as USA president this January.
Trump's war with the so-called "fake news" media has been an obsession since he started his presidential campaign, but his most recent threats have become much more severe.
The license Trump refers to is that granted by the Federal Communications Commission.
Trump has repeatedly used the term "fake news" to cast doubt on media reports about his administration, often without providing any evidence to support his case that the reports are not true.
NBC owns 12 broadcast TV stations that are licensed by the FCC, including ones in the biggest TV markets.
Hoaxes are defined as "the broadcast by a station of false information concerning a crime or catastrophe".
The FCC does not issue similar licenses for cable networks like CNN and MSNBC, or regulate internet news or other websites.