Executive Order it would fail immediately because remittances don’t require federal employee involvement,
WRONG,WRONG,WRONG
All Remittances to foreign countries REQUIRE the Federal Reserve Corporation to Exchange said Funds. The Fed is under the Control of the Executive Branch.
The Executive Branch can simply ORDER the Treasury dept and the Fed to NOT ACCEPT ANYTHING FROM MEXICO.
For no reason, doubt it, though it's not researching existing regulations and treaties since the issue is remittances going to Mexico, not from.