Seriously: aren't those synonyms?
Isn't the real question -- is the FBI incompetent, or is it actively supporting criminals?
“Seriously: aren’t those synonyms?”
Nope.
Legally, one implicates a serious crime with severe penalties, the other is meaningless.
Legally, “extremely careless” is equivalent to “pickled toast”.
“One or more of his aides” This person or persons must be identified and forced to testify under oath about the whole thing. The clear implication is that Comey and others sought a way around the evidence, and acted as spin doctors to water down even that, rather than upholding the law. That is not gross negligence on their part; it is a violation of their duty, willful obstruction of justice, and conspiracy. Special Counsel Rudy Guliani please.