Another big problem with the US is their two party system. People have nowhere else to go.
And, as noted earlier or in another thread, the inordinate amount of power wielded by small, backward states with their senate seats is a huge issue... and this is an issue with the “system”.
The fact that Wyoming, pop ~600,000 has the same political power as California pop 35,000,000, skews the democratic process so far towards states that have no population that it’s ridiculous.