China's Ministry of Commerce is pursuing legal remedy against the U.S. over new tariffs on $200 billion worth of Chinese imports. Here, a container ship is unloaded at the Port of Oakland in California last week after completing a voyage from China. Ben Margot/AP hide caption

While unemployment has hit record lows, there's another number that also gets a lot of attention — underemployment. LM Otero/AP hide caption

Morning dew glistens on a tobacco leaf in a field outside Rolesville, N.C. Despite a worldwide decline in production, tobacco remains North Carolina's most valuable crop. Allen Breed/AP hide caption

A Chinese worker looks on as a cargo ship is loaded at a port in Qingdao, in eastern China's Shandong province, in July 2017. The United States is China's biggest single export market. STR/AFP/Getty Images hide caption

Containers are transferred at a port in Qingdao in China's eastern Shandong province last week. The Trump administration announced plans to levy tariffs on another $200 billion of Chinese goods as trade tensions escalate. -/AFP/Getty Images hide caption

Ten states and the District of Columbia are investigating Wendy's and other fast-food chains over the use of "no poach" agreements that limit the ability of workers to switch jobs. Jim Watson/AFP/Getty Images hide caption

An LG washing machine plant in Clarksville, Tenn., seen under construction in January, is expected to bring 600 jobs. David Lawder/Reuters hide caption

Brexit Secretary David Davis arrives at Downing Street ahead of the weekly Cabinet meeting last week in London. Steve Back/Getty Images hide caption