Homeland Security Secretary John Kelly said he isn't going after Dreamers, illegal immigrants who were brought into the U.S. as children.

Kelly's comments on CNN's "State of the Union" came as one such immigrant sued the Trump administration after he was deported.

"My organization has not targeted these individuals," Kelly said.

He added that President Trump directed him to go after illegal immigrants who are serious criminals.

"The president told me to secure the southwest border," Kelly said. "Take the worst of those in our country illegally to look for them and deport them. That is what I am doing," Kelly said.