WASHINGTON — The United States economy will return to its pre-pandemic size by the middle of this year, even if Congress does not approve any more federal money to aid the recovery, the Congressional Budget Office said on Monday. But it will be years before everyone thrown off the job by the coronavirus is able to return to work.Those projections could further complicate President Biden’s ability to quickly pass a $1.9 trillion stimulus package, as moderate Republicans and even some left-leaning economists express concerns that too much new federal borrowing could overheat the economy.Still, Democrats worried about families putting …
