Actually people have been removing cats since the mid 70's to get more horsepower. The difference is people weren't pussies back then.
The RPM act is about pure race cars built from street cars. It'll do nothing to help street cars that sometimes race.
From https://www.sema.org/epa-news
"The RPM Act is common-sense, bi-partisan legislation to protect Americans' right to convert street vehicles (cars, trucks and motorcycles) into dedicated racecars and the motorsports-parts industry's ability to sell products that enable racers to compete. The bill clarifies that it is legal to make emissions-related changes to a street vehicle for the purpose of converting it into a racecar used exclusively in competition."
and....
"The RPM Act does not interfere with the EPA's authority to enforce against individuals who illegally install race parts on vehicles driven on public roads and highways and the companies that market such products. Tampering with the emissions system of a motor vehicle used on public roads is a clear violation of the Clean Air Act."
The bottom line is that this hobby will get out of financial reach for more and more people.
I don't want it to get to the point that we will only be able to chose from the same 6 legal parts as everyone else and all be capable of running the exact same times as everyone else. This is equally as lame as saying you can lift weights but you are limited to lifting the same weight and the same number of reps as the weakest noodle in the gym.
This is just another tactic in the war on the private automobile.
But, legally you cannot swap a catalytic converter unless it is proven to be defective."
Example a Ruger Mini 14 in wood trim wasn't banned because it didn't have a pistol grip or retractable stock. Despite it using the same magazines, ammo as the AR-15s that were banned.
Just for the record, their magazines are not the same.
Also, the wood-stocked, folding butt-stock model did have a "pistol grip".
Of course, a couple of holes in the converter(s) probably means that it no longer functions correctly and must be replaced.
Also, since catalytic converters are commonly stolen for their Platinum content, that might be another "unfortunate event" . . . Just saying, hypothetically !