We need to know whether your spouse will be an F - 1 student who is exempt individual pertaining to substantial presence test in 2009 or whether your spouse will have a green card at any time during 2009. (money.stackexchange.com)
If you're working in India - then, unless you are otherwise a US tax resident (i.e.: US citizen, green card holder, spent enough time in the US to qualify under substantial presence test, or married to such a person and made an election to file jointly), you have no US tax liability. (money.stackexchange.com)
If you don't have United States citizenship, you must either have a green card that allows you to reside in the country, or satisfy the IRS substantial presence test. (turbotax.intuit.com)