Joe
1) Yes most US majors are hiring, although most like to see circa 1000hrs of PIC time.
2) Short of marrying an american your chances of getting a work permit/green card are slim to anorexic
3)No bonds or pay for type(unless Southwest who expect you to turn up to groundschool with a 737 type)
4)Pay 1st year circa $40000 Pay 2nd year circa $80-90 000
5) Is it worth it? financially if you get on, absolutely.
Regards
FYF