The Supreme Court on Monday pressed the Food and Drug Administration on whether it followed the law in its effort to keep flavored e-cigarettes off shelves, weighing a lawsuit from a multibillion-dollar industry that has come under scrutiny because its products are popular with school-aged children.

Food and Drug Administration has rejected more than a million vaping products flavored to taste like fruit, candy or desserts.

The Supreme Court on Monday will hear a dispute over the Food and Drug Administration's refusal to approve flavored e-cigarettes over public health concerns.