WASHINGTON (AP) — The federal government will act to ban thousands of flavors used in e-cigarettes, President Donald Trump said Wednesday, responding to a recent surge in underage vaping that has alarmed parents, politicians and health authorities nationwide.

The surprise White House announcement could remake the multibillion-dollar vaping industry, which has been driven by sales of flavored nicotine formulas such as "grape slushie" and "strawberry cotton candy."

The Food and Drug Administration will develop guidelines to remove from the market all e-cigarette flavors except tobacco, Health an...