Because the tax cuts are already in place, some Republicans argue that a new bill to extend them would not incur additional costs to the U.S. Treasury. It’s analogous, they say, to renewing a Netflix subscription — the cost continues month after month, and many consumers would not consider the recurring payment a new expense.

“It recognizes reality,” said Senate Finance Committee Chair Mike Crapo (R-Idaho), the leading proponent of the approach, which is called a “current policy” baseline.