Glenn Reynolds tagged this headline with the one word "Dreamer"—I would have preferred "Not sending their best", but he's more concise than I am: DACA student arrested in Upstate New York after threatening school shooting.

This young woman (Abigail Hernandez) made threats, anonymously, on social media:

When Rochester, NY police found her

Hernandez was arrested and charged with making a terroristic threat. She was remanded to the Monroe County Jail at the time in lieu of $15,000 bail.

As officers were investigating, Immigration and Customs Enforcement (ICE) agents determined Hernandez was an illegal immigrant who was in the United States under the Deferred Action for Childhood Arrivals (DACA) program.

The DACA program was created under the Obama administration in 2012. The program stipulates that certain people who were brought to the U.S. as children and meet a series of strict guidelines will be eligible to have deferred action for at least two years, with the possibility for renewal. Deferred action refers to a delay in the individuals' prosecutorial status. It does not mean they are given lawful status as U.S. citizens.

Hernandez was moved to a federal detention facility in Batavia and will be held there until a hearing is scheduled.

Alexander said he is unsure if Hernandez is being charged as an adult. She has no prior arrests.

"The quick thinking of school staff and the tenacious work of the investigators of the police department following through on this Facebook post lead to the arrest of Abigail Hernandez and the recovery of a shotgun," a statement from the Rochester Police Department said.

Singletary said this serves as a reminder for people everywhere that if they see something, they should say something.

Hernandez is not a student at East High School. When asked why a 21-year-old woman would be a student in the Rochester City School District, city officials would not clarify.