(Reuters) - U.S. Customs and Border Protection (CBP) will pull around 750 officers off ports of entry and redeploy them to process record numbers of migrant families entering the United States at the Mexico border, the head of the agency said on Wednesday.

FILE PHOTO: Migrants from Central America are seen escorted by U.S. Customs and Border Protection (CBP) officials after crossing the border from Mexico to surrender to the officials in El Paso, Texas, U.S., in this pictured taken from Ciudad Juarez, Mexico December 3, 2018. REUTERS/Jose Luis Gonzalez/File Photo

The agency is also redirecting service personnel and expanding food, transportation and medical contracts to meet migrants’ humanitarian needs while maintaining border security, CBP Commissioner Kevin McAleenan said at a news conference in El Paso, Texas.

“There will be impacts to traffic at the border. There will be a slowdown in the processing of trade,” he said.

March is on track for the highest number of monthly border crossings in over a decade, with more than 100,000 apprehensions and encounters of people deemed inadmissible at U.S. ports of entry, McAleenan said.

Apprehensions and encounters of families were expected to reach over 55,000 people in March, McAleenan said, the highest level for any month on record, according to CBP data.

In recent years, there has been a shift in border crossings from mainly single, adult Mexicans trying to evade capture to Central American families and unaccompanied minors turning themselves in to border agents to seek asylum. Because of limits on how long children can be held in detention, most families are released to pursue their claims in U.S. immigration courts, a process that can take years.

McAleenan said up to 40 percent of CBP personnel in sectors like El Paso were now working to care for migrants’ humanitarian needs. Smugglers are using the distraction of large groups of asylum seekers to traffic drugs and migrants seeking to evade capture, he said.

For the first time in over a decade, CBP is directly releasing migrants into the United States when U.S. Immigration and Customs Enforcement is unable to provide bed space to relieve overcrowding, McAleenan said.

“We are doing everything we can to simply avoid a tragedy in a CBP facility,” said McAleenan. “With these numbers, with the types of illnesses we’re seeing at the border, I fear that it’s just a matter of time.”

Border Patrol agents on Monday located a two-year-old Honduran child near Quemado, Texas, who appeared to be suffering from seizures and convulsions. The child was taken to the Children’s Hospital of San Antonio for more advanced care, the agency said in a statement.

The hospital declined to comment on the child’s condition, due to patient privacy. Border Patrol officials were not immediately available to comment.

Two Guatemalan minors died while in U.S. Border Patrol custody in December.

The president has taken aim at the asylum system and earlier this year began sending a small number of migrants back to Mexican border towns to wait out their U.S. hearings.

As of March 26, around 370 migrants had been returned to Mexico under the program, according to a Mexican immigration official.