The Obama administration knew years in advance that Obamacare’s “grandfathering” regulation would wipe out many Americans’ existing health insurance plans, according to a leaked draft of a 2010 administration document.

“As noted earlier, deciding to relinquish grandfather status is a one-way sorting process: after some period of time, most plans will relinquish their grandfathered status since plans rarely stay exactly the same. These interim final regulations will likely influence the time frame over which plan sponsors decide to relinquish grandfathered status,” according to a June 2010 copy of “grandfather plan” regulations that was leaked to the public domain before the administration was prepared to release it.