where can i find official government information on whether or not only legal permanent residents for the following countries have to declare offshore bank accounts or not assuming that was to be the case? do these four countries have some type of cooperation like fatca or something else similar which binds them to disclose or share information if people living in these four countries have secret offshore bank accounts or something of that nature? what about other countries like el salvador, argentina, panama, paraguay? where can i find such information regarding government laws that have to do with disclosing such personal information? anyone?