American troops may be used inside the country, but it is an extraordinary exercise of authority to deploy them domestically, says an expert on the domestic role of the military.
Donald Trump aims to rewrite America's official history. George Orwell who wrote, 'Who controls the past controls the future. Who controls the present controls the past." would recognize that impulse.
As President Trump sends National Guard troops to Los Angeles, a military historian explains why crowd control is one of the Guard's most challenging and dangerous missions.
Missile defense systems are nothing new. History shows that even if they work as advertised - a big if - they're a bad idea if your aim is to make your country safer from nuclear attack.
Does Donald Trump have the power to suspend a foundational legal right to challenge a person's arrest and detention? Americans have long debated whether the president or Congress can do this.
The first Trump administration also used words like 'transparency,' 'reproducibility' and 'uncertainty' to try to block regulators from using important health studies when writing pollution rules.