Multiple Democratic lawmakers are pushing a bill that would impose 18-year term limits on Supreme Court justices. The measure would also establish a system in which a new justice is appointed every two years.

According to a press release, the proposal would involve establishing “terms of 18 years in regular active service for Supreme Court justices, after which justices who retain the office will assume senior status.” It would also involve establishing “regular appointments of Supreme Court justices in the first and third years following a presidential election as the sole means of Supreme Court appointments.”

If adopted, the proposal would mark a significant change — currently, Supreme Court justices may remain on the bench for the duration of their lifetime and presidents only have the opportunity to nominate a new justice in the event that one of the nine members of the high court dies or steps down.