Technically you are supposed to register your LLC as a foreign entity with each state that you do business in.

Was it negligence (foreign objects put down the drain) or just buildup over time.  

Tomas,You can get a foreign national loan or take advantage of a DSCR loan with 20% down for a second home or investment property.

Only if I was young again, I could imagine house hacking and rent short-term to some exciting foreign guests, so much to learn from different cultures, or renting a room to a doctor or lawyer while they look for the primary home, what great connections you can make.

You can form a California LLC and register it as a foreign business in Ohio or you can just form an Ohio based LLC.

This is due to a massive amount of out of state and foreign buyers buying up investment properties.  

On another note, yesterday we realized that paragraph 20 of the Trec 1-4 purchase contract basically says that the buyers have to get a certificate of non-foreign status from the sellers.

There's a huge % of our country which votes to give up more of their privacy and freedom every time they're given a ballot whether or not it's in their best interest because doing so typically has some "feel good" gift wrap so we find ourselves in a tough situation as social media/tech/business/finance/foreign interests collide under these conditions. 

Is claiming foreign rental income on taxes much different than rental income domestically in the US? 

I know a lawyer that has been helping foreign national real estate investors set up entities to do so for the past 15 years.