Sleep with dogs, wake up with fleas. We could likely go on with these in perpetuity. Also, a lot of Nazis were friends of the US considering Operation Paperclip happened.
Also, why would Biden need to move his policies if he’s pretty conservative to begin with? More oil drilling than when trump was president. Horrible border policy. Strike busting. No protections against all the bigoted state level laws. No Supreme Court packing. No nominations for an attorney general who would actually prevent trump from rising to power again (likely because trump is probably the only person Biden even has a chance of beating in an election). Green energy initiatives that are so poorly thought out that it now costs more to install solar than before. Wanting to sign a bill to remove a competing social media platform under the supervision of Musk and Zuckerberg. Bypassing congress to send arms to Israel to support a genocide purely to acquire land to compete with china’s new trade route.
Biden is willing to become a hawkish republican to win on the democrat ticket and to be seen as “strong” to would-be republican voters because he knows he’s lost the left. If you’re okay with the US continually walking right with every democrat and running right with every republican, just keep doing what you’re doing.