Drunken states usually!
they immighated there to get away from the potato famine and to get away from the disease.
It depends on where are you from. For Chinese, they can join a travel group, this will be easy and ensure high possibility to obtain the visa. Try to work with big agents in China (CITS, CYTS, etc)...
I believe it is in the US Consitution.
by car and feet