Members of the House Oversight Committee are casting a broad net in an effort to bring soaring drug costs under control, but the lack of consensus on the main problem they need to address could make it difficult to find a solution.

“There is a strong bipartisan consensus that we must do something, something meaningful,” House Oversight Chairman Elijah Cummings (D-Md.) said at a Jan. 29 hearing. He later reminded the witnesses and members that they should focus on solutions, not just the problems facing the committee.

President Donald Trump also made the point of asking Rep. Mark Meadows (R-N.C.)...