Mystery solved? After Illinois Democratic Rep. Luis Gutierrez abruptly announced his retirement Tuesday and endorsed a successor without revealing his future political plans, Fox News has learned the outspoken immigration advocate will be testing the waters for a potential 2020 presidential bid. Few national political figures could be more ideologically opposed on the issue of immigration than President Trump – who wants a border wall and has fought to suspend immigration from some Muslim-majority countries – and Gutierrez, who blasted even the Obama administration over legal deportations.