You can Buy House without Down Payment. But you have to search and find the good One in your area. Zero Down Payment or Now Down Payment for Home Loan in India is very common, due to the large amount of poverty line population. But its also available in US. You can read about it here http://www.bankrate.com/finance/mortgages/4-mortgages-that-require-little-money-down-1.aspx
. Or you can contact a Certified Real Estate Agent in your Area http://localservices.sulekha.com/real-estate-agents-in-dallas-fortworth-area . Better approach with certified and Licensed Indian Realtors in Your Area. Becuase they know how to buy a home at zero down payment.