$538 billion? Wow! Do you have a source for that?
http://www.heritage.org/immigration/report/the-fiscal-cost-unlawful-immigrants-and-amnesty-the-us-taxpayer
Yup:
http://teoinfo.com/2017/07/10/what-if-the-illegals-left-what-if-20-million-illegal-aliens-vacated-america/