@maggie2115 , very much agreeing with my colleague @rjs ( thank you ), we have not addressed the Mexican Tax portion. As far as I know ( and I do have properties in MX ), unless you also hold Mexican Nationality, there is always Mexican Capital Gains Tax in addition to IVA.
You should consult with a Mexican Lawyer on this .
Note that if you are able to exclude gains from US taxes, you may or may not qualify for foreign tax credit ( depending on the exact facts and circumstance ( nationality / location/ how-held Fidiecomiso etc. etc.)
