All presidents come into office vowing to rapidly put into effect an ambitious agenda. But for Joseph R. Biden Jr., the raging coronavirus pandemic and the economic pain it is causing mean many things must get done quickly if he wants to get the economy going. In a speech Thursday on his $1.9 trillion spending proposal, Mr. Biden repeatedly stressed the need to act “now.”But piecing together a majority in Congress could take time: Compromises and concessions will be needed to get the votes he will need to advance legislation.The new president is expected to reverse many of Donald …
