Long CSB Alert-
I had a relative who was in senior leadership with the Customs and Border Patrol in Eagle Pass in the 90's.
One day, when his boss was off, my relative was in charge of the crossing. One of the trucks trying to cross was ordered to pull off for a thorough secondary inspection. He was walking over to check it out when he saw the agents at the secondary inspection area talk to the driver, then wave the truck through without an inspection.
My relative ordered other agents to stop the truck and then gave it a full inspection.
Spoiler alert, they found a shitload of drugs.
In the process of investigating, he discovered an extensive bribery scheme that implicated at least 3 agents.
My relative, being honest and too trusting, immediately went and reported it to his boss, as well as local law enforcement/DA's office. Unfortunately for my relative, the corruption was pervasive and went WAY above his head.
There was a token investigation, but some of the evidence disappeared and other evidence was "accidentally" tainted. With the key evidence missing, or tainted, the investigation was dropped without looking into anyone else's involvement.
My relative had been with CBP over a decade and had a spotless record to that point, but he suddenly received several bullshit retaliatory allegations in the next few weeks, and was forced out of CBP.
He also received multiple, extremely graphic and credible threats against his wife and kids unless he immediately left town, both from the cartel and his fellow agents (he recognized one of the voices). Stuff like how they would be tortured, killed and then buried in the desert where they'd never be found.
He finally figured out the whole place was corrupt AF, decided not to push his luck, and moved very far away from the US/Mexico border with a quickness.