I don't know and that is a good question. I can't imagine how anyone could not actually be fishing in the "other" state and then be prosecuted by the "other" state. I, like many others, have put in at the state park and ran around to sulpher, occasionally caught fish, and then returned to the state park without as much as a thought about getting checked and potentially prosecuted by Tennessee. You would think that with the cooperation between the two states, relative to management and reciprocal license agreements that this wouldn't be and issue.
By the way, don't count on the state park ramp being usable. I talked to someone at Horse Creek who told me that the lake may go down another 3 feet. It's been at least 4 weeks since I determined that I couldn't launch (and load) at the state park.
Not trying to scare you or anyone else but before you make a trip, call and confirm.

Good Luck,
Mike