The Department of Homeland Security detained a New York City Council employee during an immigration appointment on Monday, leading to outrage from Mayor Zohran Mamdani.

Fox News contributor Dan Hoffman joined 'Fox & Friends First' to discuss the Trump administration's warning to U.S. citizens in Iran and what regime change could mean for the nation and beyond.

President Trump is exploring options for diplomacy with Iran even as he weighs whether to attack the country to try to deter its leaders from killing more protesters, U.S. officials said on Monday.