We favor British common law countries because of their property rights and often foreigners can own property with little to no restrictions.  

You can go the private money lender route, you can get funding with green card status or foreign national.

I have been studying and trading Forex, Stocks (stocks not so much) and Crypto currencies (just recently started Nov. 2017) part time since I was 18 years old so have a clear understanding of value and how it fluctuates based on a number of variables, and think i have an amazing leverage over the average noob.

@Lorin K.Although Vancouver is ranked third least affordable in this year's Demographia report; yielding second place to Sidney, Australia, its median multiple {housing price to income ratio} rose from 10.6 to 10.8 meaning things became even less affordable.While foreign investment is a big driver in the frothy Vancouver housing market, it's not the only factor at play.On a national level , Canada held onto the dubious honour of being second on the list of countries where housing is least affordable - the median market remained flat nationally, but improved slightly when just the major metropolitan centres are considered.Toronto - Canada's second most foamy market - saw its median multiple rise from 6.5 to 6.7 - ranking it 330th out of 367 cities in order of decreasing affordability.

I'm an attorney and foreign-language translator and am beginning my R/E investment education.

While the tax exempt stuff sounds foreign to me, it definitely sounds like something worth looking into.

here is the scenario, my friend is foreigner who not live in US, he wants to buy the rental property, I will help him to management it, he can give me the power atterney to handle all rental related issue, I have no license yet, is that compliant with CA laws?

@Roy Mitle He would qualify for a foreign national loan only, even if you co-sign.

I'm familiar with the whole building/repairing process so it wouldn't be completely foreign to me.

HUD criminal investigation division can make requests to any federal agency.But, if you just follow what's usual and customary you'll never be sent to a foreign country for questioning or reported as "Lost at Sea" :)