BH there are 1000s of pilot jobs in the US right now but it is not possible to fly for a US airline unless you have US citizenship or a "Green Card" - permanent residency status.
It's kind of a catch 22 situation in that to be able to qualify for a green card you must find an airline that will sponsor you but right now no US airline can sponsor foreign pilots. The US government does not classify pilots in the same category as doctors, engineers, nurses and computer specialists. These 4 professions can literally walk into the US as there are some serious - and government recognized - shortages. The US government does not recognize a pilot shortage...yet. The US Congress is considering passing legislation to extend the age of mandatory retirement for airline pilots from the current 60 to 63 and perhaps even 65. This is a very postive sign that the US government may change the status for foreign pilots.
Look up
www.usimmigration.com for more information on getting into the US. It's an Immigation Lawyer's website that is quite interesting. Check it out.
Hope this helps