Here is my guess as to what has happened. It is all about Israel funding. Maga Republicans said NO to Ukraine funding. Then the Uniparty tied Israel and border funding to Ukraine because they knew that is what the Maga players wanted. Then McConnell gets Lankford and Sinema to write the bill, figuring they would be expendable for the Uniparty. Speaker of the House proposes a stand alone funding bill for Israel, and Biden says he will veto it. The Uniparty releases a horrible bill, knowing no one will pass it, thus torpedoing the Border and Israel Bills. Then he comes back with a reduced standalone Ukraine funding bill, say 30 billion. Everyone is happy, and McConnell gets rid of Lankford and Sinema.
All out of their league. They think they joined a club, but the club isn't really going to follow thru on their end.