The latest version of President Donald Trump's immigration restrictions has been temporarily blocked by a federal judge.
Some states are bringing in federal help to secure voting systems ahead of 2018.
Nielsen currently is the White House principal deputy chief of staff.
Members of Congress are asking the Trump administration to waive a 1920 shipping law that could make it tougher for Puerto Rico to recover.
Similar programs have already been tested by both ICE and U.S. Citizenship and Immigration Services.
The Department of Homeland Security informed 21 states Russian hackers attempted to access their voting systems during the 2016 election.
California Attorney General Xavier Becerra filed the lawsuit Wednesday, claiming the Trump administration is violating the U.S. Constitution.
The Department of Homeland Security sent out a directive telling agencies to start a process to remove Kaspersky products from their systems.
Because of Hurricane Irma, the government is temporarily suspending a law prohibiting foreign ships from transporting goods between two U.S. ports.
Mattis is creating a panel of experts to determine how the military should put President Donald Trump's new transgender guidelines into effect.
Colorado's director of Homeland Security and Emergency Management is closely monitoring the threat from North Korea.
President Trump said Reince Priebus is leaving his post as chief of staff. Current Secretary of Homeland Security John Kelly will take over.