Great read is Milton Friedman's "Money Mischief"  which goes all the way back to Roman times for inflation and debasing of currency. 

That's understandable but I wouldn't forgo the huge benefits of diversification (including on the currency) and getting higher return overseas just because of the inconvenience of a potential tax audit.

I like to think of them as different currencies, even.  

Part of the motivation is to secure residency in multiple countries, have my investments in multiple currencies, and to set up an offshore structure for my company in one of these locations. 

Market risk, currency risk, inflation rick, etc. 

This devalues the currency because of basic supply and demand, the printing of new currency units decreases the value of the existing currency units assuming the velocity of money exchanging hands stays consistent.  

So, you purchase price and your costs are low and, on top of that, expressed in a depreciated currency while your revenus are high and, on top of that, expressed in an appreciating currency.If you look at the risks, what I just mentioned gives you a huge margin of safety.

I've also looked in Florida, and Arizona but financing and the currency exchange is tough right now to justify investing in US. 

They will even do the currency settlement.

In addition, the US dollars is still trading at $1 to 19 pesos, this makes Mexico a very attractive pick for many investors.Crypto currencies:  For the first time in my travel, I begin to see that crypto currencies were getting more popular.