There were absolutely changes in the separation policies across administrations. While it’s not perfect, we are compliant with international law and it was Trump driving from the sidelines that killed an immigration reform bill earlier this year.
He could have only possibly have voted for 2 of the five in the majority in Dobbs. Any Democratic nominee to the court would be better for human rights and policy reform. Congressional majority beyond Sinema and Manchin could bring real court reform.
The point still is that the philosophical argument for third party ignores the reality of the current system and the real cost for not presenting a unified front with the current voting system. Republicans are working to lock in any systematic advantage they can so the odds are already skewed. Democratic governments, currently at the state and local levels, are the only ones addressing gerrymandering (CA) and ranked choice (MA) which could make third parties viable but right now they are a vanity vote that distracts from the real harm being caused by one party.