Vice President Harris will deliver her first major speech on the economy on Monday in North Carolina as she continues her push to tout the Biden administration’s $2 trillion infrastructure plan.

In doing so, she is highlighting at least one piece of the proposal stemming directly from a 2019 bill she introduced as a California senator to electrify the nation’s school buses, which make up 90 percent of the nation’s total bus fleet, according to three senior administration officials.

Environmental Protection Agency Administrator Michael Regan, the former head of North Carolina’s environmental agency, will be accompanying Harris in the state. The EPA, along with the Department of Energy, will be key to the administration’s broader $174 billion electric vehicle push.

Harris will visit a Thomas Built Buses manufacturing plant in High Point, N.C., to discuss the $20 billion investment the administration is proposing to convert the entire U.S. fleet of gasoline and diesel-powered school buses to electric vehicles.

The visit will follow a Harris speech at the Center for Advanced Manufacturing at Guilford Technical Community College highlighting the administration’s work during its first 90 days and its goal of creating more jobs than any other White House in history.

The infrastructure package “will be the largest jobs investment our country has made since World War II,” Harris will say, according to excerpts of her speech provided to The Washington Post.

“And it’s not just about jobs. It’s about good jobs. … At a good job, you shouldn’t have to worry about your safety at work. At a good job, you shouldn’t have to go into debt for a diploma that promises a decent paycheck,” Harris plans to say.

Harris’s appearance on the campus of the technical school is also designed to underscore the training required for the new manufacturing jobs the administration hopes to create if Congress approves the infrastructure plan.

Although Harris has yet to explicitly highlight as much, her policy footprint threads through the far-reaching infrastructure proposal. As a senator, Harris co-sponsored several of the bills and investments incorporated into Biden’s infrastructure effort, including the plan’s proposed $111 billion investment in water infrastructure and $100 billion investment in high-speed broadband infrastructure.

The administration’s push to electrify the nation’s school bus fleet is derived directly from Harris’s original bill, according to senior administration officials. But it goes even further in trying to transition school buses — which mostly run on diesel fuel and make up 90 percent of transit buses in the United States.

The measure will prioritize transitioning school buses in districts serving the most students on free and reduced lunches and those with high local air pollution, as diesel engines are a major source of harmful pollutants and may contribute to respiratory illnesses in children. A 2001 study found that “a child riding inside of a diesel school bus may be exposed to as much as 4 times the level of toxic diesel exhaust as someone riding in a car ahead of it.”

The proposal includes the expense of purchasing the electric buses, as well as funds for retraining workers and implementing the necessary charging infrastructure, along with broader technical assistance for districts to adjust for things such as route planning, because fuel stops would no longer be required. The proposal would also increase the resiliency of local electric grids, a senior administration officials argued, because buses operate only in the mornings and in the afternoons and can be used as grid assets at other times.

Though the endeavor is ambitious, the transition is already happening in some places. Highland Electric Transportation purchased and deployed about 300 electric school buses from the company for Montgomery County Public Schools in Maryland earlier this year — the largest single procurement of electric school buses in the country.

“One of the things that the Americans Jobs Plan does is find some of the innovative things that have worked on the ground and in state and local governments — and try and see what we can amplify and expand for the federal government,” a senior administration official said.

That administration official did not have a specific estimate for how many jobs electrifying school buses would create — and it’s unclear how many jobs the overall infrastructure plan would offer.

Republicans have signaled support for increasing spending on electric vehicle infrastructure, but Harris and the president still face a long, uphill battle in getting the infrastructure bill to the president’s desk — let alone winning over any GOP lawmakers.

Though she’s still defining her role as Biden’s No. 2, Harris is playing a key role in selling the infrastructure package and will spend much of the spring traveling the country to tout various policies, some of which she championed as a senator.

“The way a vice president can have impact is when they define ideas. It’s a measure of her influence in a less-obvious way,” said Joel Goldstein, a vice-presidential scholar and law professor at Saint Louis University School of Law. “And of course, one of the things that’s so tricky about the vice presidency is so often that what you do and contribute isn’t something that people want to flag.”

She has been tapped to lead diplomatic efforts and address the root causes of migration, and she’s crisscrossed the country to discuss the administration’s $1.9 trillion stimulus package, holding meetings with lawmakers and small businesses in the run-up to its passage.

Harris intends to play a similar role with the infrastructure plan, according to senior administration officials: She visited a water treatment facility in Oakland, Calif., last month to promote the administration’s goal of replacing 100 percent of the nation’s lead pipes and service lines to deliver clean drinking water and reduce lead exposure to schools, homes and child-care facilities.

The provision is reminiscent of Harris’s 2019 Water Justice Act, which called for $250 billion in federal spending on access to safe and affordable drinking water by replacing lead-containing services lines.

The infrastructure plan’s broadband investment proposal also mirrors a bill Harris co-sponsored in the Senate that would invest $100 billion in building high-speed broadband and infrastructure in underserved and unserved communities.