Sometimes people just get so focused on shopping rate, they forget about fees, and many lenders understand that, so they quote a low rate, but don't tell you there are buydown fees involved, or their fees are there to make up for the low rate.Next time use a trusted local resource like @Andrew Postell. 

They eventually reach a point where they tire of reading the same questions and answers, or they are too busy with other pursuits to stay involved.

.• If you want to get involved in syndications or passive real estate investing but you don't have enough in liquid cash for the minimum investment, you can use your retirement accounts like a self-direct IRA to do so!

This balances maintaining your current property and expanding your investment portfolio, although it involves higher mortgage payments.Given your goal to minimize your ex’s financial benefit, selling your current home and purchasing a new house hack might be the most straightforward and financially advantageous route.

The people involved in the transaction may know the lender and their reputation to close deals giving your offer an advantage.

Knowing everything about your business, and subsequently managing all people involved, unfortunately, always rests on our shoulders.

However, if this is a true "joint venture", all members must be actively involved in generating their own profits so the credit partner would also need to participate in decisions regarding the property such as which contractors to hire; handling issues that arise, etc. 

They’re involved with money laundering.

My initial question, does anyone know what's involved to invest in a US market as Canadians?

Notre Dame has had a lot of involvement in improving the area in the last 15 years, and there is a growing startup community.