Why would Republicans support a president Biden when all the media and congress dems have done is fight and obstruct every chance they got?

You must have crap between your ears.  REpublicans -- especially Moscow Mitch in the Senate have been obstructing anything and everything for 20 or more years. - - And they will keep on trying to disrupt anything that Biden tries.  Then they will lie and blame it all on Democrats (and the brainwashed like you will believe their lies) That is all they know how to do.

Right, and you have obviously forgotten when Republicans were known as the "Party of No" when Obama was in office.
1) Judges filing injunctions on every presidential decision - Lawyers file for an injunction and judges sign it.  No, they do not do in on every presidential action, just the ones which may be against the law/Constitution, and often times were.

2) Leaking classified information to the Washington Post just to smear the other side . - You mean like Hunter's supposed laptop?

3) Launching 2 impeachment pushes without reason. - There were 13 attempts to impeach Obama, it is just that none of them made it.

4) Calling the president "Hitler" and "fascist" and "racist" and "xenophobic".  I call an orange an orange. 

6) Lying to the American People in front of cameras every day and then testifying behind closed doors the exact opposite of what they said in front of cameras.  - Trump has been documented as being the most prolific liar to have ever graced the White House.  From his first campaign, his lies were counted, and was shown to have lied at twice the rate of Hillary.

You are just a pitiful hypocrite.

Dah!
Since when have either party NOT swooned to cooperate over the American empire?
Bush jr = Obama = Biden!

Because if Moscow Mitch don't play ball and there is no action on Covid-19 relief by January those 2 Georgia Senate run off elections will fall to the Dems and the GOP will be irrelevant federally. 

The first and foremost issue is the Covid-19 crisis. If Trump had encouraged people to follow the original pandemic plan, he would have easily skated into reelection.