In a lawsuit filed Tuesday, Merck becomes the first major drugmaker to challenge Biden's Inflation Reduction Act, which it says "violates the Constitution" by allowing the government to unilaterally impose its preferred price.

The whistleblower, Amy Vermillion, "brought a case [the government] never would have known about, [and the defendants] would have continued the fraud if it wasn't for her bringing this forward," said her lawyer, Mike Bothwell.

More than 8% of Americans (aged 18 to 64) have skipped, delayed or reduced the amount of prescribed medication because of cost concerns, according to the CDC.

Slightly upping default auto-escalation rates - from 1% to 2% - and escalation intervals in defined contribution plans could improve savings without discouraging participation, according to Voya research.