CNN reviewed hundreds of videos, analyzed state drone-detection data and traveled to the US-Mexico border to investigate how cartels and other criminal groups are using drones in their operations.

Trump says Iran war will end after midterms

Trump to restore Confederate memorial & drop slavery context

Congressman on Trump's 100+ posting spree: 'It's unhinged'

Ted Cruz says US in 'military conflict' with Iran, not at war

CNN Poll: Two key senate races are neck and neck

LIVE: Remembering 9/11, 25 Years Later | U.S Remembers September 11, 2001 | Tump | Terrorism | N18G

BREAKING | 25 Years Since 9/11 Terror Attacks: US Remembers Victims, Heroes & First Responders |N18G