You know, the solution to "problems" like that is to abolish visas altogether.
A visa is essentially a permission to exist in a certain geographical area. Why exactly do you need one?
Yes I know governments won't let you in/out without one, but what sense does it make?
What possible moral justification is there, for preventing you from moving freely when you're not harming anyone else?
You've heard of people "misusing" their visas, right? But how crazy is the idea of "misusing" your permission to exist in an area?
How crazy is it that visas come with a list of activities you're allowed to engage in?
For example, if you're on a tourist visa, you're not allowed to work in exchange for money, nor sell your company's product to someone.
You might think it's because governments need to keep track of who owes them taxes and how much, but um.. what sense does that make?
Say you were born in England and lived there all your life. Then you fly over to Thailand on a tourist visa, and you fix someone's bicycle in exchange for a small fee.
How/why is Thailand's government entitled to a cut of the money you made in doing that? If you believe in the Social Contract, does that get temporarily passed from England to Thailand, for the duration of your stay?
Or did you perhaps unwittingly sign a new one with Thailand, by entering their territory?
Would sitting on a plane that happens to cross some specific unseen line on a map constitute agreeing to a binding obligation to hand over some of your income to the organization "in charge" of the area you entered?
Of course not, but that's what The Rules say. But why/how are we bound by The Rules?
Well, we're not. Not in any objective, moral sense at all. But we all obey the rules anyway.
Why is that, besides to avoid being punished for disobedience?