LLCs are not a Federally recognize entity. 

(Federal Tax Liens).

I friend of mine said that he thought there were federal agencies or some business's that help you retrieve your money when involved in a scam that help the consumer.

I'd rather have an employed tenant who can afford the rent than someone who has lived life thinking rent is $300 a month and the government pays the rest.

The view of the government is that retirement plan such as a solo 401(k) plan is to invest in passive investments such as buy-and-hold real estate (e.g., rentals).  

I have read that there was a federal lawsuit filed against Texas that would make refusal of Section 8 housing illegal - discrimination of income source - but currently, is it illegal to turn them away?

I know Chicago has a bunch of excessive laws governing all sorts of contractor stuff, so its certainly possible there are laws concerning contracts too.

These kinds of the transaction go against Economic Substance Doctrine.A transaction has economic substance if: (1) the transaction changes in a meaningful way (apart from Federal income tax effects) the taxpayer’s economic position; and (2) the taxpayer has a substantial purpose (apart from Federal income tax effects) for entering into such transaction.There is no change in your economic position by transferring your primary residence into a LLC, You do not have a substantial purpose for entering into such transaction other than to simply avoid paying federal income taxes.Hope that helps. 

Too much economic and job growth and relatively low inventory to keep up with said growth.Just keep up with your local/state government and what they're doing to attract and/or keep jobs, whether companies are moving in or leaving, the average inventory on the market in the areas you invest, and also the average DOM for the properties that have sold.  

About half are federal loans at nearly 5% the other half are private ranging from 6-9%.