I'm noticing there are some really nice cash flow markets in texas, some of which are really close to the Mexican border, though.

Very interested in the Cleveland/Ohio market in addition to a few other cross-border cities closer to Toronto. 

Start by talking to a cross-border CPA and attorney to handle taxes and legal structures properly.

If it's in the restricted zone (within 31 miles of the coast or 62 miles from an international border, you have the choice between using a bank trust and paying the fees mentioned above or using a Mexican corporation and bearing the costs of establishing and maintaining  the corporation.

Based on some of the previous similar threads, it seems that having a good cross-border team is a crucial step in this game.

Specifically, I am interested in learning more about syndications, working with lenders, lawyers, CPAs, and other professionals involved in cross-border real estate deals.

Quote from @Henry Clark: @Michael PlaksIf they want to stop money laundering and funding terrorism they can control the border.  

Key point is WITH a SECURED border to stop the flood of 100k-300k monthly illegls. 

Consider financing options like hard money loans, or FHA loans for house hacking, and focus on areas with strong rental demand near the MA/NH border.

I own a house in North Port, Florida (right on the border of Port Charlotte).