Mitch McConnell blocked what should have been an easy victory for Trump on infrastructure in 2017-2018. He also refused to fund Trump’s border wall. Unlike Ukraine and the $1.7 trillion Omnibus, it was too expensive.
McConnell ran circles around Trump and is more responsible than anyone for how the Trump presidency played out. He got his tax cuts, military spending and judges and blocked everything else.
Sucking up to Joe Biden after giving him a bunch of pivotal victories (infrastructure, climate change, gun control, gay marriage, Electoral Count Act, Ukraine, etc.) that rescued his presidency and demoralized Republican voters is classic McConnell.