I have to say that in the light of recent changes, europe (uk,france) as far i know, getting a job even if you have a work visa, is difficult, i cant really go into detail ebcause that might discourage others, but the work visa process has been tightened in U.K, the work visa was always difficult in france, but i wouldn`t suggest an international candidate to do an MBA in europe hoping they would be sponsored.
Now the people i am taking about are (career changers, less experience) so on. Highly experienced people will not have a problem with sponsors, there will be some.
I didn`t know that the situation for international students was still the same in USA, i was under the assumption that people are now able to get into Morgan S, so on and get sponsored.
But that`s my opinion, europe gives a great environment for studying and if you dont mind the visa, then you dont need to worry