Venezuelan’s decision to close its border with Colombia at night to fight contraband is drawing complaints from both sides of the frontier.

On Monday night, Venezuela began shutting down the 1,500-mile border from 10 p.m. to 5 a.m. to crack down on the smuggling of heavily subsidized gasoline and food. Venezuela has the world’s cheapest gas and the government maintains price controls on many food items, providing an incentive for smugglers to sell them abroad.