Hi I just arrive to US in July 2016 with TN visa but I am paying child support to my kids in Mexico. Is it possible to deduce the mexican Child support for taxes in US?

Hi I just arrive to US in July 2016 with TN visa but I am paying child support to my kids in Mexico. Is it possible to deduce the mexican Child support for taxes in US?

I get a kid 15 years old and 20 and 22 daughters full time students in Mexico. And I am still sending money to them. 

There are many questions:

May I request a refund for mexican Child Support even if they are not US citizen or they live with me? if so what I need to do to get the refund?