Why yes, building a wall next to an existing wall certainly does keep the drugs out of the country.
This month the DEA made the biggest meth bust in American history: 2200 pounds of meth, nearly 900 pounds of cocaine, and 13 pounds of heroin. This may be the biggest meth bust in American history, but it doesn't even come close to making our list of the biggest drug busts in U.S. history. Columbia annually produces more than 900 tons of cocaine, most of which find buyers in our country. We are spending billions of dollars of taxpayers' money to seize only a tiny percentage of illegal drug trade and pretend that we are successful. According to the CDC around 68,300 people died in the U.S. from drug overdoses over the 12 month period ending September 2019