I don't think the FBI is too fond of them and I am not sure about the USSS. I know ATF, ICE and DEA guys with visible tatts. I have full sleeve (USMS).
I am not sure I would be too keen on having my name tatted on me, though... especially if going into DEA where you may do UC (though, I hope you get to keep your shirt on).
We bring evil things to evil people, kicking in a door near you!
."In theory, there is no difference between theory and practice. But,
in practice, there is."
- Jan L.A. van de Snepscheut
"The difference between 'involvement' and 'commitment' is like
an eggs-and-ham breakfast: the chicken was 'involved' - the pig
was'committed'."
-unknown
Working on a PhD in CQB one doorway at a time.
When the wolf attacks, he will find not all who run with the flock are sheep!