As I've said. Illegal immigration is a 'gateway' crime of sorts. It spawns all kinds of other crimes.

Using someone else's social security number in that manner doesn't have to be a crime. Back in the 2010s, which I am familiar with the courts were reluctant to make to make it a crime. I got pulled in for clerical "show" duty one time and found the fellow I was talking to had been audited for four years because someone was using his SSN, and it showed up when he filed his returns. He did some kinda social work with criminals and one of them got his SSN somehow. All people were doing, when they were satisfied, was dismissing the audit. I called social security and they called the employer. SS also had two people talk directly to the person falsely using the social security number. That person used it because he was a felon and it helped him get jobs. He was white and the fellow I helped was black. I took the time to write the fellow a letter explaining what happened, everything I had done, that we verified the man down in Texas wasn't him, so he'd have something to show if this happened again.

Nothing happened to that fellow in Texas for using the SSN. It's my impression it's small potatoes.