It reminds me of a notorious slum lord/lady with a number of properties in Juneau. When I took over the rental properties from the panicked absentee owner, I found a clause in the Rental Agreement form that I immediately removed:

"I agree to hold harmless the owner of (this building) and agent thereof in the event of damage or injury to myself or my belongings or of anyone else or their belongings residing in this unit from any hazard(s) whether known or unknown..."

As I told the owner, there was no way such a caveat would have held up in court- better to remove it and not appear such a fool...

Bush may try something similar.