Law enforcement expert pushes back against the now-former Biden administration's claim that violent crime was at a 50-year low, says the administration "manipulated" key data points.

House Homeland Security Committee Chairman Mark Green says the "national security blunders of the past four years" have "emboldened" terrorists and homegrown violent extremism.

President Donald Trump's national security adviser has sent home about 160 National Security Council aides while the administration reviews staffing and tries to align it with Trump's agenda.

President Donald Trump has followed through with another campaign trail promise by signing an executive order requiring ...