I've done major rehabs, owner financing, private money, partners, out-of-state investing, and Airbnb but still prefer the good ole long-term buy and hold.

My partners and I are flipping homes and doing some wholesaling. 

Im wondering, wouldnt a way as a non-US resident to invest in real estate in the US on the same terms as US residents be as a limited partner in a syndication?  

In my Captial partner business my clients are still doing BRRRR and selling to investors and home owners on flips..

You would be better served upgrading from your last one and becoming a small partner in a flip where you could bring your sweat equity and some cash and learn on the job more when it's not a family member.

During that time, I built up a portfolio of 250 doors with a business partner.

Partners make sense, but you aren't far enough along in the networking phase.

My partner and I are currently hold 2 properties in the Glendale area that have done quite well.

My goal is to partner on or syndicate a parking garage or lot in a secondary or tertiary market located in the Midwest, Northeast, or South by the end of this year.

really depends on the lender/partner..