But fentanyl trade in China is difficult to regulate. Chinese websites advertise fentanyl to American clients, who have it shipped to their mailing addresses. Just a small amount of fentanyl can be deadly: According to the Drug Enforcement Administration, 1 kilogram of fentanyl purchased for $3,000 to $5,000 in China could potentially kill 500,000 people. An opioid pain reliever often used by cancer patients, fentanyl is 50 to 100 times stronger than morphine. Drug dealers also sell fentanyl-laced counterfeit pills or fentanyl mixed with heroin, leading to overdoses.
Migrant families desperate to flee gang violence and an administration determined to stop illegal immigration are adding up to a crisis on the border