I believe Roberts appoints the FISA judges, too.
In defense of the corrupt, lying Judge who imposed
the ObamaCARE tax against Americans (and should be removed):
what was he to do with the DNC/DS threatening to expose
HOW he got his children, and to put "his head on a pike"?
He does. It's a part time job for persons already confirmed by the senate and appointed as federal judges, generally district courts.
50 USC 1803 - Designation of judges
It's a make-work sham. Likely a billion dollars a year when all done. And it does ZERO to curtail snooping.
Sort of like making a law that shooting people or possessing guns is banned only affects the honest folks. The government has demonstrated, repeatedly, over decades, that it is not honest about how much it snoops.