Kamala Harris has gone 45 days without a news conference since being tapped for border crisis role

In Texas, Homeland Security Secretary Alejandro Mayorkas told reporters "dramatic progress" has been made in reducing crowding in migrant shelters

Vice President Kamala Harris held a "virtual" meeting Friday with the president of Mexico – while another member of the Biden administration visited the U.S.-Mexico border in person.

Friday was the 45th day that the vice president has neither traveled to the border nor held a news conference about her border-related duties since late March, when President Biden appointed her manager of the administration’s response to the migrant crisis.

Harris spoke online Friday with Mexico’s President Andrés Manuel López Obrador as part of her stated review of the "root causes" of the migrant crisis – in which thousands of Latin American migrants, including unaccompanied minors, have been seeking to enter the U.S.

DHS CHIEF MAYORKAS SAYS HUNDREDS OF MIGRANT KIDS STILL COMING IN DAILY

The vice president also plans June visits to Mexico and Guatemala – even though she hasn’t announced any plans to visit the border areas of Texas, New Mexico, Arizona or her home state of California.

Harris has called for significant investment in the so-called "Northern Triangle" region of Central America, composed of Honduras, Guatemala and  El Salvador -- in everything from stemming violence against marginalized groups to assisting farmers to plant drought-resistant crops. She has touted an initial $310 million in aid being sent to the region, part of a broader $4 billion planned investment by the Biden administration.

In her discussion with the Mexican leader, Harris said it was "in our mutual interest to address some of these root causes" and said she wanted to do it in a way that "internationalizes our approach.

"And our approach is a comprehensive strategy approach," she continued. "Our approach is to work with international institutions, to work with nations worldwide, the private sector and community organizations."

Meanwhile, about 1,700 miles from Washington, Homeland Security Secretary Alejandro Mayorkas was touring a migrant facility in Donna, Texas.

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The secretary told reporters that federal officials have made "dramatic progress" in reducing crowding in migrant shelters but stressed that "the challenge remains" to do a better job.

"Unfortunately, we're still seeing a fairly high population of migrant children are coming across -- 270 a day right now, the last 21 days," he said.

Fox News' Adam Shaw contributed to this story.