By LISA MASCARO, AAMER MADHANI and ALAN FRAM WASHINGTON (AP) — Half its original size, President Joe Biden’s big domestic policy plan is being pulled apart and reconfigured as Democrats edge closer to satisfying their most reluctant colleagues and finishing what’s now about a $1.75 trillion package. How to pay for it all remained deeply in flux Tuesday, with a proposed billionaires’ tax running into criticism as cumbersome or worse.