That is hardly true.
Rental property is almost entirely governed by local laws.
There are many other businesses that are barely affected by Congress.
Real Estate can gain value greatly if you know ahead of time where the new roads will be routed, or can loose value quickly if new laws change environmental requirements for its use.
There isno such thing as an investment that is unaffected by congressional legislation , whether positively or negatively .
It would be best if the congressmen involved were entirely seaparated from knoledge of their investments and their trust managers were entirely seaparated from knoledge of the congressmans voteing.
Govenors and Presidents also.
This seems to be the situation for only a minority of them, and there seems little disadvantage to those who flagrantly use insider knoledge , this situation could be better.
If president Barak Obama and govenor Mitt Romney have been ignoring their investments , then I am pleased with the both of them.
I do not know how to verify this as fact , but they both seemed pleasingly ignorant in the debate.