South Korea’s trade minister responded swiftly to Washington’s announcement of anti-dumping measures on Korean washing machine and solar panel makers, vowing on Jan. 23 to take the issue up at the World Trade Organization.

“Our government expresses its regret over the excessive safeguard measures that affect our companies and the clear fact that they will violate WTO regulations,” Kim Hyun-chong said at a countermeasures meeting in Seoul, as cited by local media. “We can prevail if we file the case...