And they have legislation pending that wouldn't allow you to deny for a misdemeanor after 3 years or a felony after 5.

You can't buy a house and then your DTI be too high for that house, otherwise you would have been denied financing.  

Quote from @Denis Ponder: My goal is to amass as much as possible for the rest of my life then pass it along to my kids.  

After they confirmed they make less than the rent, I denied the application on those grounds.After that, they messaged me that they have a housing voucher which was not included in the application as a source of income and that the housing voucher would make their income reach the minimum requirements.What do I do now?

U have to be aware to ask for more insurance .. and when denied by one company you need to move to another that will write the higher amount. 

I AM WELL AWARE THAT IT IS ILLEGAL for a LANDLORD to deny a tenant based on their marital status.

What was the reason title company denied?

Sorry, I did not get approved, application denied, for a HELOC because of the Covid assistance and mortgage extended 32 months.would applying with anyone else possibly get me approved?

I applied for a HELOC was denied due to a COVID assistance plan. 

You might be able to get away with paying the difference between the 1/2 month of rent and short term living cost.I think you would only have legal issues if you deny them use of the property for 2 weeks and charge them full rent.