Exactly what has anyone "defended and covered for Biden". Republicans have made all manner of allegations and accusations, but after 5 years of investigations by the FBI, the IRS, multiple inspectors general, and a 4 1/2 year special prosecutor's investigation, you still haven't found any evidence, witnesses, or facts, to support even the idea that Joe Biden has committed a crime.
I have no idea why you bring Nixon into this. There was no impeachment vote in the House, because Nixon resigned before one was held, knowing he would lose in both Houses if he stayed. Impeachment proceedings had commenced in the House, but were never completed.
Both Houses were held by Democrats. When Republicans told Nixon he wouldn't get more than 10 Republican votes in the Senate, he resigned rather than undergo the indignity of being removed from office.
For 30 years, you assholes have accused Democrats of every crime immaginable, including pedophilia and murder.
STOP LYING AND START COMING UP WITH PROOF OF YOUR CLAIMS, BECAUSE NOBODY BELIEVES YOU ANY MORE.