@revelette3,
On the BBC website there is an article by N American correspondent Anthony Zurcher in which he describes the change in the Democrat party as tectonic.
He puts it down to a younger generation who haven’t heard stories of the “brave struggle for survival,” at the beginning and instead see a huge military colonial power oppressing the native population.
The make up of the legislature has changed, currently 23% of the make up of both houses is non white. Twenty years ago it was just 11%, and in 1945 it was only 1%.
Biden is finding himself increasingly out of step with his base on this matter.