CNN  —  Affordable Care Act insurers are proposing their steepest premium increases since 2018, driven in part by the looming expiration of Biden-era enhanced premium subsidies and by the Trump administration’s tariffs, a new KFF analysis has found. Insurers are asking for a typical rate increase of 15% with more than a quarter proposing hikes of 20% or more. KFF, a nonpartisan health policy research group, looked at 105 Obamacare insurers in 19 states and the District of Columbia that have