So on one hand, no country should ever take its currency's favor status for granted. But if you've ever spent a fraction of your life looking at the rules and regulations behind currency trading by central banks, you'll see two rules everywhere:

1 - Every central bank will trade its own currency.

2 - Every central bank will trade in USD.

(Even if they hate the USD with a blinding passion.)

The USD is the global standard not because of some diabolical scheme by the US, but rather because it is liquid beyond liquid. EVERYONE IS WILLING TO TRADE IT!!

Can the same be said about the Mexican Peso ? Nope, even some of its neighboring central banks are not willing to trade it.