If you have case pending with the INS stay there and do that.
I was made to come back by the INS after 7 years living and working in the US. The job market with the US majors is not great right now. Even with with your 2300TT and 300+ ME the majors would have been a push for you prior to 9/11. You will, however still have no problem getting hired by the regionals. They are going crazy at the moment.
I know personally 4 people who get hired by SkyWest in the last month. Three of those have a lot fewer hours than you. Plus others with other regionals.
But hey, that is just my opinion.
Good luck with what ever choice you make.