House Oversight Chairman James Comer will hold a hearing next week to explore how the federal government got so big, as he moves to add some legislative heft to President Trump’s goal of slashing the bureaucracy down to size.

The hearing is titled “Rightsizing Government” and will feature testimony from Iowa Gov. Kim Reynolds, a Republican who two years ago won a major restructuring of her state government and, Mr. Comer said, provides a possible model for the feds.

The hearing, which The Washington Times is first to report, comes as Republicans believe the country is ripe for a big discussion about what government does do, what it doesn’t do, and what it doesn’t do very well.

“Many federal programs funded by Congress are now bloated, struggle to meet their objectives, and have become vulnerable to waste, fraud, abuse, and mismanagement,” Mr. Comer said. “It’s clear that a complete overhaul of the federal government’s operations is long overdue.”

The Kentucky Republican said his committee can work with Mr. Trump’s Elon Musk-led office, the Department of Government Efficiency, to make changes.

The hearing is expected to look at why the federal reach has expanded so far, with both Congress and the Executive Branch playing a role in pushing Uncle Sam into jobs that might have been shocking to the country’s founders.

Ms. Reynolds’ Iowa reorganization reduced the number of state Cabinet positions from 37 to 16, and has given the governor more hiring and firing flexibility, particularly for senior officials.

Ms. Reynolds has also overseen a series of tax cuts, creating a flat tax in 2022 then trimming the rate to go lower in legislation that kicked in earlier this year.

“Iowa has transformed the way our state interacts with citizens by shrinking and aligning government, saving taxpayers over $217 million in just eighteen months,” Ms. Reynolds told The Times. “It’s an honor to share this story in front of the House Oversight Committee, and I’m hopeful it can serve as a model for the Trump administration’s DOGE efforts.”

Republicans across Capitol Hill are hoping to capitalize on the excitement over the DOGE.

Mr. Comer said his committee can play a premier role, given it has purview over how the executive branch is organized.

“The committee is determined to facilitate government reforms that safeguard taxpayer funds, while making the federal government more efficient and effective for all Americans,” Mr. Comer said.

His hearing is planned for Feb. 5.

Thomas A. Schatz, president of Citizens Against Government Waste, is also slated to testify alongside Ms. Reynolds.