I am an American citizen with a +1 Transit Schengen visa valid until the 29th of November 2007. I do not have my carte de sejour yet, but I want to travel to Budapest, Hungary (which is not a Schengen country) during the first weekend of October.
As an American citizen, I do not need a visa to enter into Hungary. However, would it complicate matters if I do not yet have the carte de sejour? In other words, would I have any problems getting back into France from Hungary?