OIG Found FBI SSA engaged in outside employment, falsely represented material facts on mortgage documents, misused vehicle, lied on financial disclosures, used FBI resources to vet clients AND exchanged sexually explicit texts.
“Prosecution was declined”
https://oig.justice.gov/reports/2019/f190205.pdf
Other than actual considering with Russian hookers, or being married to a FORN from certain countries, the commonest way to fail a background check is finsocial red flags: and I'd think falsifying a mortgage falls under *that*.