In some cases I will write my offer subject to the seller making the property POS (point of sale) compliant, meaning clearing any [usually petty] violations the city may have called out, in jurisdictions where POS is required at transfer (e.g. many suburbs of Cleveland).

There are many online tenant screening services that make this a quick (and compliant) task.

US citizens won't tolerate it  They already proved they aren't the most compliant people on the face of planet Earth, even when "the science says." 

Quote from @Carolyn Fuller: Quote from @Bruce Woodruff:But once these 3000 units do what is necessary to become 'compliant', most go right back into the STR market, not helping the 'housing crisis' at all.

Will they be OSHA compliant? 

So, if I have a partner who isn't an agent that I'm investing with and we do mail campaigns, would it be compliant if we were to just use his name on all the mailings so we wouldn't have to disclose that I am an agent?

You would be the recorded lender (i.e. the bank).A broker experienced with private lending will have a loan package that’s been vetted by a lawyer and possess the ability to ensure the loan is legally compliant and enforceable.