Uh... At the fear of sounding pedantic, do not go into a country illegally.
If I went to France or Guatemala, I would not be surprised if I suddenly get deported. In order for Laws to mean something, they have to be upheld.
Or are we supposed to pick and chose Laws, but only when convenient? If incorrect, can I rob you or get your Visa or MasterCard numbers? Promise not to use them. ;-)