Ahem… Senate? This is still a problem.

Aetna’s withdrawal is the latest in a series of insurers leaving Obamacare. The exodus began last year, when several carriers announced they were exiting or downsizing in 2017 after suffering large losses. Humana (HUM) already announced it is completely abandoning the individual market in 2018. UnitedHealthcare (UNH) pulled out of Virginia, and Wellmark Blue Cross Blue Shield said it would stop selling individual policies in Iowa in 2018.

Several insurers remaining in Obamacare are requesting big rate hikes for next year. CareFirst BlueCross BlueShield is looking for an average rate increase of 52% for its individual market plans in Maryland. It also requested hikes of 35% in Virginia and 29% in Washington D.C.

In Virginia, Cigna wants to raise rates by an average of 45%, while HealthKeepers, an affiliate of Anthem Blue Cross and Blue Shield, is looking for an 38% increase.