Is this act valid only to US citizens? How about permanent residents?
I I should add that this is not a free $600 kickback from the government. It's merely an advance on your next year's anticipated tax refund, meaning that if your federal refund comes to $1,000, you'll only be receiving $400.
Incorrect.
From the FAQ posted on the IRS website:
Q. Will the payment I receive in 2008 reduce my 2008 refund or increase the amount I owe for 2008?
A. No, the stimulus payment will not reduce your refund or increase the amount you owe when you file your 2008 return.
Incorrect.