In March 2018, Wyden and Representative Frank Pallone sent a letter to Comptroller General of the United States Gene Dodaro calling for an investigation of eligibility requirements of Medicaid programs, writing that "If CMS continues to approve work requirements and other restrictions on Medicaid, the consequences could be severe for federal spending and the sustainability of the Medicaid program" and expressing the view that the public "should have complete information about the consequences of proposed Section 1115 waivers to ensure limited taxpayer dollars are being used efficiently, appropriately, and towards the goal of promoting, not obstructing, access to health care."