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.

The Supreme Court appeared unconvinced Monday that the FDA acted unfairly in denying sweet-flavored vaping products after a surge in teen use, according to court proceedings. Justices raised doubts about the vaping industry’s claims that the FDA abruptly changed its standards, leading to over a million denials of flavored nicotine products.

The justices will review a lower-court ruling that the FDA acted in an “arbitrary and capricious” way when it denied two vape companies authorization to market products with s