There are no laws prohibiting renting to illegal/undocumented immigrants at the Federal level, and none at the PA state level that I'm aware of.

If we recorded a quitclaim deed signed by my wife (signalling her lack of ownership in the property) could I then demonstrate sole ownership of the parcel (and thus not violate the related-parties prohibition for an exchange?)

There may be laws prohibiting advertising property you do not own if you are an unlicensed broker.

. - PROHIBITED SIGNS."

Cost to hire that done would have been prohibitive.

I also heard that some HOA rules prohibit you from renting your condo out.

Of course the landlord should always arrange necessary repairs, but for some the costs may be prohibitive over time.

Pay, except as provided elsewhere in this Agreement, all expenses incurred by the Agent, including, but not limited to, reasonable attorney’s fees and Agent’s costs and time in connection with any claim, proceeding, or suit involving an alleged violation by the Agent or Owner, or both, of any law pertaining to fair employment, fair credit reporting, environmental protection, rent control, taxes, or fair housing, including, but not limited to, any law prohibiting, or making illegal, discrimination on the basis of race, sex, creed, color, religion, national origin, age, marital status, or mental or physical handicap, provided, however, that the Owner shall not be responsible to the Agent for any expenses in the event that Agent is finally adjudicated to have personally, and not in a representative capacity, violated any such law, unless such acts and or omissions are outside the course and scope of Agent’s duties hereunder.

The repeal of the 18th Amendment (prohibition of alcohol) has already shown how crime can be reduced simply by regulating, and how tax revenue can be greatly increased.

Either the materials are simply not available any more the cost to replicate would be cost prohibitive.