In a rare moment of bipartisan collaboration, Republicans and Democrats agreed last year to suspend the implementation of the controversial “Cadillac tax” on the most expensive health insurance plans for two years.

Intended to go into effect in 2018, the tax will not be implemented until 2020, assuming Congress does not suspend it again or move to permanently kill it.

The 40% excise tax on health plans worth more than $10,200 for single coverage or $27,500 for family coverage was touted by many economists as a way to encourage companies to cut back on health expenses and thereby slow down the inflation of national health costs. Policymakers have long argued that exempting employee health benefits from payroll taxes encourages businesses to shift much of their compensation from wages to benefits, which has driven up health costs.