If you are a legal resident in the U.S. you must file a federal income tax return every year and report ALL your US and world-wide income, including dividends from a Mexican company. If you are married you may file a joint return with your wife, or file married filing separately. Generally, a joint tax returns receives a slightly better tax treatment, although you should consult with an accountant for your particular situation.
Answered on Dec 18th, 2010 at 6:58 AM