Remember that Mexican Border Wall Trump had promised? And remember that Mexico was supposed to pay for it otherwise remittance payments would be retained?
Will the Mexican peso currency is losing its value on the market.
Will the Mexican population rush to use bitcoin as there currency is failing, or will shaken investors move there recent sell off into a stronger decentralized currency?

I think Mexican will use the dollars as backup and not bitcoin, there maybe some people using bitcoin, but since there are so many dollars in the Mexican economy I think the easiest way to try to escape devaluation will be the US dollar.
Mexico has got increased bitcoin users as well lot of stores accepting bitcoins. On account of this users might use bitcoin as their backing to some extent. Once again if the Trump government makes it liberal with the wall construction the devaluation might get stopped within a small percentage.