It’s unfortunate there aren’t any Roman coins in the U.S. But fortunately the generally better weather and relative freedom and economic opportunity (vanishing, but still here for now) tend to make up for that.
None that we've found yet, nor are we ever likely to, but never say never.
Wouldn't that be a kick?
Be patient, I'm sure an LDS Freeper will be here shortly trying to convince you to keep digging.