Why is the Biden administration sabotaging peace talks between Russia and Ukraine and allowing Chinese Present Xi Jinping to potentially broker a cease fire/peace deal with Vladimir Putin?

Because that is what Xi wants... you have to understand that China owns Joe Biden.

https://twitter.com/dschlopesisback/status/1637858831186157579?s=46&t=G8osZoHuXTQhHbGFJD4WZg

@Dschlopes