Weeeellllllll......have you ever heard of stealth fishing? I do have an Indiana license and most of my tours have been in Indiana due to lack of time to go too much further till I retire. But I have fished in Ohio without a license and in Michigan. It's risky but not big time risk, about the same as speeding on the freeway and getting caught. Night fishing offers some distinct advantages too. They don't throw you in jail, they sometimes take your fishing equipment depending on your attitude, and give you a ticket for $25 to $50 depending on the state. The fine isn't bad considering that a 7 day license is between $7 to $12 and if you don't get caught for a long time you come out ahead!!

Personally, because of problems like touring whether its by car, bike, hiking etc it's impractical to have a license in every state, they should have a federal fishing license so travelers can fish in other states without having to buy one for every state their going to be in.