Early in the Klinton administration, over a three year period 75% of the J. Edgar Hoover trained FBI agents retired. They were replaced with city bred and raised, NON military, affirmative action types. OVER 50% had NEVER fired a gun before they were hired. This group could NOT handle the then issued full power 10mm rounds. That is the real reason the FBI went to the 40 S&W round. The published reason was it afforded more rounds in a smaller weapon. NOT true. The truth is they couldn't get their hands around the big S&W 10mm pistols issued at the time.
This group they hired is VERY loyal to the Klintons! Now you have some idea why Trump is having trouble with them.