Donald Trump Perez: Trump team’s agency inquiries ‘illegal’ Top House Intel Dem to Obama: Expose Putin’s corruption Trump Organization’s top attorney named to administration post MORE has tapped a former national security aide in the George W. Bush administration as his counterterrorism adviser. Tom Bossert , who served as Bush’s deputy homeland security adviser, will join Trump’s White House as the assistant to the president for homeland security and counterterrorism.