GOP Sen. John Cornyn lamented on Twitter that the Biden administration treats immigrants humanely

• Sen. John Cornyn attacked the Biden administration as emphasizing "humane treatment" of immigrants.

• Cornyn tweeted that prior Democratic presidents had expressed opposition to illegal immigration.

• Cornyn and Democratic Sen. Kyrsten Sinema later asked Biden for more border resources.

• See more stories on Insider's business page.

As Republican legislators press President Joe Biden over a surge of immigrants at the US-Mexico border, Sen. John Cornyn of Texas attacked Biden on Twitter over his administration's "humane treatment of immigrants."

Video: How COVID-19 is ravaging two border towns

Cornyn posted a string of tweets on Monday describing how Democratic Presidents Barack Obama and Bill Clinton had expressed opposition to illegal immigration. The Republican senator then said that Biden "has instead emphasized the humane treatment of immigrants, regardless of their legal status."

The comments drew criticism online, as some people questioned why Cornyn would portray humane treatment as a bad thing. Democratic Rep. Don Beyer of Virginia called Cornyn's attack an "incredible new low."

Cornyn's press team did not immediately respond to Insider's request for comment.

Later Monday, Cornyn and Democratic Sen. Kyrsten Sinema of Arizona sent a letter to the president asking for more executive action on migration at the border.

They specifically asked for more resources at border facilities and a streamlined asylum process to treat the mounting backlog in immigration cases.

The Biden administration has faced scrutiny of its border policy as officials have reported a surge in child detentions at the border.

The Washington Post reported over the weekend that Customs and Border Protection and the Department of Health and Human Services were holding over 15,000 unaccompanied minors. CBP told Insider that it encountered 337 unaccompanied migrant children on average per day.

In an interview with ABC News last week, Biden addressed the number of migrants seeking to cross the border, telling Central American migrants not to come to the US.

"Yes, I can say quite clearly: Don't come over," Biden said, adding, "Don't leave your town or city or community."

Read the original article on Business Insider