With e-cigarettes and flavored vapes booming in popularity, the 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. The case comes as kid-friendly flavors, such as fruit, candy, mint, menthol and desserts, which are not approved by the FDA and are on the market illegally, have been fueling an explosion in retail sales of e-cigarettes. While vaping among youth is declining, more than 1.6 million children use the products, according to the Centers for Disease Control and Prevention. Nearly 90% of them consume illicit flavored brands. A high school student uses a vaping device near a school campus in Cambridge, Mass., April 11, 2018. AP Photo/Steven Senne, File Two manufacturers of flavored nicotine-laced e-liquids such as “Jimmy the Juice Man Peachy Strawberry” and “Iced Pineapple Express” sued the FDA after their product applications were rejected, alleging regulators imposed unclear and unreasonable requirements to win approval. Triton Distribution and Vapetasia acknowledged that their products may appeal to youth but insisted that a “growing