With e-cigarettes and flavored vapes booming in popularity, the U.S. Supreme Court on Monday will examine whether the Food and Drug Administration unlawfully blocked the marketing and sale of more than a million new sweet and candy-flavored nicotine products in recent years.

A majority of Supreme Court justices didn't seem convinced Monday that federal regulators misled companies as they refused to allow them to sell sweet flavored vaping products following a surge in teen e-cigarette use.

Supreme Court hears arguments over the power of the Food and Drug Administration to prohibit the sale of candy-colored vaping products aimed at teenagers.