But Kelly has said the issue should be taken up by Capitol Hill lawmakers because "Congress is the only entity that can provide a long-term solution to this issue."

Other groups agree with Kelly.
Those other groups are DACA amnesty supporters just like Trump's appointed Secretary of DHS. Many of us that voted on Trump do not support a resoloution in the U.S. Congress because we know that would mean permanent legalization should folks like Secretary Kelly and those "other groups" get their wish.