How does imposing Executive Orders (easily overturned by Biden) make it "Political Untenable" ? It doesn't even require Congressional Support.
It's like saying Trump withdrawing from WHO, Paris Climate Agreement, UN Human Rights council via executive decisions, trying to make it "Political Untenable" for US to re-engage in multilateralism again.
The average American voter has a memory of a goldfish, Trump got voted out. He has zero influence in future policy making, esp. Biden's executive orders can overturn what Trump did without needing any approval from Congress.