Barrett, J., concurring
babysitter takes the kids on a road trip to an amusement park, where they spend two days on rollercoasters and one night in a hotel. Was the babysitter’s trip consistent with the parent’s instruction? Maybe in a literal sense, because the instruction was open-ended. But was the trip consistent with a reasonable understanding of the parent’s instruction? Highly doubtful. In the normal course, permission to spend money on fun authorizes a babysitter to take children to the local ice cream parlor or movie theater, not on a multiday excursion to an out-of-town amusement park. If a parent were willing to greenlight a trip that big, we would expect much more clarity than a general instruction to “make sure the kids have fun.”
But what if there is more to the story? Perhaps there is obvious contextual evidence that the babysitter’s jaunt was permissible—for example, maybe the parent left tickets to the amusement park on the counter. Other clues, though less obvious, can also demonstrate that the babysitter took a reasonable view of the parent’s instruction. Perhaps the parent showed the babysitter where the suitcases are, in the event that she took the children somewhere overnight. Or maybe the parent mentioned that she had budgeted $2,000 for weekend entertainment. Indeed, some relevant points of context may not have been communicated by the parent at all. For instance, we might view the parent’s statement differently if this babysitter had taken the children on such trips before or if the babysitter were a grandparent.
In my view, the major questions doctrine grows out of these same commonsense principles of communication. Just as we would expect a parent to give more than a general instruction if she intended to authorize a babysitter-led getaway, we also “expect Congress to speak clearly if it wishes to assign to an agency decisions of vast ‘economic and political significance.’ ” Utility Air, 573 U. S., at 324. That clarity may come from specific words in the statute,
