Publication 901 will tell you whether a tax treaty between the United States and a particular country offers a reduced rate of, or possibly a complete exemption from, U.S. income tax for residents of that particular country.
None at this time.
Other Items You May Find Useful
About Form 1040-C, U.S. Departing Alien Income Tax Return
About Form 1040NR, U.S. Nonresident Alien Income Tax Return
About Form W-7, Application for IRS Individual Taxpayer Identification Number
About Form 8833, Treaty-Based Return Position Disclosure Under Section 6114 or 7701(b)