Much of the US's governance relies on politeness, the assumption of good faith, and adherence to norms. It was a system destined to fail as soon as defectors realize the power they stand to gain by deliberately bringing the system to its needs (and then blaming their opponents for it, trusting that their own constituents are too gormless to realize or care).
In contrast, here's how the old Venetians elected the Doge, in a process so complex that it was presumably impossible to game to anyone's advantage:
"First, thirty members of the Great Council were chosen at random. Then nine of those thirty were chosen, again randomly. Those nine members picked the next set: forty people from the Great Council. And those forty? Twelve, randomly picked from their number, moved on to the next step. Those twelve chose twenty-five; those twenty-five were randomly pared down to just nine. Having fun yet? This set of nine members chose forty-five more; eleven were picked – again at random – from those forty-five. The eleven chose forty-one members. Those forty-one (finally!) voted for the doge. There were some additional checks against skulduggery. Each noble family couldn’t have more than one member in each group, and members couldn’t vote for their own relatives. Every time a set of members voted for the next group, more than a simple majority was required: around three quarters of the voting group had to agree. (For the final election, just 25 of the 41 had to agree.)"
https://generalist.academy/2020/11/06/the-election-of-the-do...
In contrast, here's how the old Venetians elected the Doge, in a process so complex that it was presumably impossible to game to anyone's advantage:
"First, thirty members of the Great Council were chosen at random. Then nine of those thirty were chosen, again randomly. Those nine members picked the next set: forty people from the Great Council. And those forty? Twelve, randomly picked from their number, moved on to the next step. Those twelve chose twenty-five; those twenty-five were randomly pared down to just nine. Having fun yet? This set of nine members chose forty-five more; eleven were picked – again at random – from those forty-five. The eleven chose forty-one members. Those forty-one (finally!) voted for the doge. There were some additional checks against skulduggery. Each noble family couldn’t have more than one member in each group, and members couldn’t vote for their own relatives. Every time a set of members voted for the next group, more than a simple majority was required: around three quarters of the voting group had to agree. (For the final election, just 25 of the 41 had to agree.)"
https://generalist.academy/2020/11/06/the-election-of-the-do...