Earlier quoted context omitted.
It is not unbelievable, it is the stated stance of the GOP to reduce environmental and health regulations, and they are doing it. It is exactly what we voted for.
The majority of us did not vote for this. Without gerrymandering or the electoral college, Congress and the White House would be overwhelmingly controlled by Democrats.
First, gerrymandering's effectiveness is a symptom of the problematic way we elect politicians in this country (first-past-the-post). Implement multimember districts and proportional representation and things might change (then again they might not).
Second, so what if the Democrats controlled everything: Richard fucking Nixon gave us the EPA and relations with China. Meanwhile Carter gave us Regan, Clinton gave us welfare reform/destruction and finance deregulation, Obama gave us a giveaway for private health insurers and put social security on the table ("chained CPI"). Obama and Clinton both accelerated the militarization of our police. This notion that everything would be better (from a progressive/liberal perspective) if only Democrats had power is just out of sync with reality. Better than republicans? Maybe, on some issues. Generally not though.