I think Mexicos real motive is to prevent remittances from illegals from going anywhere but Mexico.
What a country eh?
Which Country are you talking about? The country who has a system for getting rid of huge amounts of poor, uneducated citizens who are a drag on their society and who pay handsomely for their privilege of living outside their own country, or the Country that foolishly allows another country to dump their poor, uneducated underclass into their country accepting the substantial drag on their economy and the cultural upheaval these people cause?
What a Country, indeed.