Unless your parents have a SSN or ITIN, you cannot claim any sort of deduction or credit for hosting them in the U.S. That is simply a personal expense.
There is no such thing as "married filing single." Again----your choices will be married filing jointly or married filing separately. If you have a child---file a joint return or you may lose child-related credits.
**Disclaimer: Every effort has been made to offer the most correct information possible. The poster disclaims any legal responsibility for the accuracy of the information that is contained in this post.**
