No Income Loans for OOS Investor

Hey! 

I don't know if it is impossible to get them or just super hard.

 I have been trying to get approved for the last 6 months with no results. 

I am an out of US Investor (but have SSN) bought my last couple deals in Indy with cash

I have no income in US beside the rents from the houses I own. 

I would really appreciate any thought, advice or recomendation!