Secret Service agents showed up at Chicago elementary school

• Due to a misunderstanding CPS officials had initially reported denying entry to ICE agents Friday morning.
• The Secret Service agents were "investigating a threat made against a government official we protect," USSS spokesperson Anthony Guglielmi said in a statement.
• He said the agents "identified themselves to the school principal and provided business cards " but "we do not investigate nor enforce immigration laws."

The big picture: Trump's policy change has some parents of undocumented children reconsidering whether to send them to school, AP reports.

• The school, Hamline Elementary, is in a predominantly Mexican-American neighborhood.
• Like many school districts, CPS does not ask students for their immigration status and does not coordinate with immigration enforcement agencies.

How it happened: CPS officials explained late Friday that the confusion stemmed from the agents' presentation of identification from the Department of Homeland Security, which oversees both ICE and the Secret Service. 

• "While this was a misunderstanding in terms of the specific branch of DHS, the school's response demonstrates that our system, in partnership with community organizations, is prepared and ready to keep our students and staff safe," a CPS spokesperson said.

Editor's note: This story has been updated with the latest.