Ex husband moved overseas and does not pay support

Single mo, Indiana

My ex husband moved out of the USA in 2009. He owes over 20000.00 in child support. I am trying to raise our two children. I work over 40 hours every week . I work and it is still hard. I would like money to pay off a 2nd mortgage this would make my life a little easier. My paypal account is cynthia000@yahoo.com