Sen. Bernie SandersBernard (Bernie) SandersTrump claims a 'spy' on his campaign tried to help 'Crooked Hillary' win Rising star Abrams advances in Georgia governor race Webb: Drain the swamp MORE (I-Vt.) and Rep. Elijah CummingsElijah Eugene CummingsHouse oversight GOP refuses to force DOJ official to answer census questions Dem urges House Oversight to subpoena Cambridge Analytica Dems want DOJ to hand over docs related to Comey conversation MORE (D-Md.) called on the Obama administration to prevent the increasing costs of generic drugs.

“The federal government must act immediately and aggressively to address the increasing costs of these drugs,” the lawmakers wrote in a letter sent Thursday to Department of Health and Human Services Secretary Sylvia BurwellSylvia Mary Mathews BurwellPrice was a disaster for HHS — Time for an administrator, not an ideologue Overnight Healthcare: GOP chairman to introduce pre-existing condition bill ObamaCare enrollment hits 11.5M for 2017 MORE.

The two lawmakers have previously written drug makers asking why prices have “risen at alarming rates.” They asked drug makers to respond by Oct. 23.

In their letter to Burwell, they cited examples of an asthma medication going from $11 to $424 in one year. Sanders and Cummings said the price increases not only affect consumers but also the federal government.

“These huge price increases are affecting the pocketbooks and health of millions of Americans,” the letter stated. “The rapidly increasing prices being charged for generic drugs is also directly affecting the budgets of Medicare, Medicaid, the Department of Defense, and the Department of Veterans Affairs.”