My life-long best friend was a Special Agent In Charge DEA for about 30 years. His opinion of the Rangers upper echelon is that they are incompetent and corrupt. He feels the same way about the FBI, but the opinion goes deeper into their regular ranks than just the upper command.
Concur with the Rangers. I had always considered them to be incorruptible, apolitical, and interested in facts alone.
In my old town, there was a crooked Official. He had various crooked henchmen, some with badges, working for him. His scheme was to pile bureaucracy onto developers, and offer a way to get rid of them "for a small consideration." He did real well. Pay the man, and your project goes forward. Don't pay the man, and you'll be in Permit Hell. Some people got damned fed up with this, and with the reluctance of local Law Enforcement to do a damned thing. Complaints were made that evidently reached the right ears.
One fine day, a Ranger showed up in town. He carefully went about, gathering evidence, talking to the right people, looking at the developments and hearing about what was happening. Then, he left, and everybody held their breath.
Two weeks later, the crooked Official was back in business. It trickled back that he had a friend, too, and that friend spoke to some other people in Austin, and the Rangers let it drop.
I seriously doubt that the Ranger that came to town would have allowed that to happen. He knew without any doubt whatsoever that there was pay-to-play going on. But, he took orders from elsewhere, and he evidently obeyed them.
To the poor schmucks in town who weren't on the take, and did things the right way (that would be 95% of the Town), it was a complete slap in the face.
Screw it.