Republicans figured out that 5 or more people on the Supreme Court can decide cases however the f they want. Their expositions constitution doesn't say squat about how the must decide cases.
Their explanations, if offered at all, need not make any sense or follow any logic or norm. They can make up crap and call it "interpreting the constitution" even if it's clearly not.
Hence the ridiculous decision to halt the recount in bush v gore and the decision to enslave pregnant women.
The balance of powers is supposed to protect us, but when the separate branches are all controlled by a common group of people who answer to powers outside of the constitution, it nullifies the founders' protections. A united Republican Party, in concert with a corrupt media, rendered the institutions of the constitution largely impotent.
The pardon power can be abused, certainly. Donnie pardoning his brownshirts is inexcusable, but the protection is impeachment and that ain't happening because the house is controlled by equally corrupt people.