Tirupathi Donation - US Tax exemption?

I am going to India and also Tirupathi. I wish to donate some money for Tirumala,Tirupathi temple in USD.

I wanted to know if I can claim tax exemption in the US for that?
What is the proof or documents necessary as to show in my Tax returns.

People, please post your experiences too.

Charitable deductions are allowed for US charitable organizations only.