LL, get that clearance in writing and keep in until 2 years after you die. They can come back in ten years demanding the 50 plus interest and potentially even jail your ass.
I once was mistaken for someone in Texas who'd fathered an illegitimate child and then bolted (SSN was one digit off, and the last name was one letter off). I've still got a file on that, and it was 10 years back.