The argument, delivered in seven Thursday morning tweets, was not Trump's first show of support for armed teachers.
President Donald Trump planned to meet with parents, students and teachers who have been victims of gun violence, including those affected by last week's school shooting in Florida.
The special counsel's investigation has already delivered well over a dozen indictments and collected numerous guilty pleas.
Special counsel Robert Mueller may be about to get a guilty plea from another former Trump staffer. The individual in question: Rick Gates.
The FBI said that a tip it received about accused Florida shooter Nikolas Cruz should have caused him to be assessed as a threat, but proper protocols were not followed.
CNBC's Brian Sullivan highlights the market moves after Special Counsel Robert Mueller indicts 13 Russian nationals on election interference charges.
CNBC's Eamon Javers reports on the FBI not following protocol after receiving a tip from a public access tipline related to the Florida high school shooter.
As families prepared to bury victims of another U.S. mass shooting, grief mixed with anger amid indications that law enforcement may have missed clues about the suspected gunman's plans.
White House press secretary Sarah Sanders is scheduled to take questions from reporters.
The House Oversight Committee has launched a probe about the employment of White House staff secretary Rob Porter.
Romance cons are on the rise, now accounting for the highest financial losses of all internet-facilitated crimes, according to the FBI.
The FBI has contradicted the White House's story about the timing of a background check of White House staff secretary Rob Porter.
Russia and China could soon possess "destructive" space weapons that could be used against the U.S., American intelligence said.
The White House has claimed the FBI was still conducting a background check of Rob Porter when he resigned amid domestic abuse claims.
The document is expected to challenge the central claims of last week's incendiary GOP memo.
President Trump believes an FBI text message exchange proves that the FBI was conspiring against him but that's not the case, Vox explains.
The Obama-era Cabinet member said he would decide by the end of the year whether or not to run for office.
Porter, who denies the allegations, is said to have lashed out at both women during their respective honeymoons.
In one text, one FBI official told another that President Barack Obama wanted to "know everything" the FBI was doing.
Keeping security agencies in the dark could harm the respect needed for intelligence sharing between institutions, experts say.