Source: POLITICO - Link
From the day Joe Biden stepped into the White House, his top priority was clear: Pass Covid relief. Ignore skirmishes elsewhere. Keep the message to Congress simple. And keep the message to the public even clearer: The current health and financial crisis would not go unanswered.
Lefty Dems always want everything right now. Loading up bills with stuff makes them easier to reject and muddles the message. Biden gets this.