A threat by the nation’s largest health insurer to pull out of ObamaCare is a sign of the industry’s growing angst about the viability of the federal exchanges, sources close to the industry say.

UnitedHealthcare’s warning sent new shockwaves across the healthcare sector after weeks of mounting anxiety among private insurers whose participation in the exchanges is critical to the viability of the president’s signature law.

In the last month alone, insurers have learned that the Obama administration has significantly lowered its expectations for new customers and will have far fewer federal dollars to help cushion insurer losses.

Read the article “New ObamaCare Angst as Top Insurer Threatens to Bail” on thehill.com.