For an US or Canadian private lender to be willing to carry the additional risk of investing in Mexico, he’d require a much higher rate compared to what he can get in his own country.

As far as I know, Canadian credit scores don't mean anything in the US and we need to start from zero.

problem is the Canadian market is impossible to buy in.

We have some active Canadian investors here in our market that seem to do quite well.

However, do we need to consider the currency exchange or are there any other fees we will have to pay from transferring this from Canadian account to American Account? 

As Euclid said, "There is no royal road to geometry.”  ..but in this case, Real Estate Investing.This is a great place to start learning the basics of RE finance and figuring out what you need to do to get moving! 

If the agent screws up royally then I am subject to scrutiny to texas real estate commission and possible license forfeiture due to my agent.

I am specifically wondering about this for Canadian real estate investment. 

Best to interview several lenders - or find a mortgage broker who specializes in working with investors - before you get to the point of making an offer.A good reference on analysing the cash-flow of real estate is @Frank Gallinelli's "What Every Real Estate Investor Needs to Know about Cash Flow"A good primer on financing and holding real estate for Canadians is Steven Cohen and Geroge Dubés "Legal, Tax and Accounting Strategies for the Canadian Real Estate Investor"

Some banks on the list:Deutsche Bank AG, Societe Generale, Calyon, Barclays Plc, Rabobank, Danske, HSBC, Royal Bank of Scotland, Banco Santander, and Lloyds Banking Group.