The No. 2 leader of Venezuela’s opposition-controlled congress was arrested by security forces Wednesday as President Nicolás Maduro’s government began going after foes tied to the failed attempt to stir up a military uprising last week. National Assembly Vice President Edgar Zambrano was leaving his Democratic Action Party’s headquarters when he was surprised by a commando unit from the feared SEBIN intelligence agency. The unit members surrounded his car, according to reports. A half-hour later, the officers towed the vehicle away with the lawmaker still inside, at the same time that Maduro was speaking live on state TV and inaugurating...