The teens claimed CBP targeted them because they hadn’t booked hotels for their entire stay in Hawaii.
“They found it suspicious that we hadn’t fully booked our accommodations for the entire five weeks in Hawaii,” Pohl said. “We wanted to travel spontaneously. Just like we had done in Thailand and New Zealand.”
Where you intend to stay is part of the questioning when you enter and they can get quite suspicious if you don’t have a plan. Source: An Austrian, white friend of mine who went to the US. He also just wanted to travel around but was warned in advance (by other, mostly white europeans) that he shouldn’t state that when asked. It’s just not worth the risk.
While that’s not the same as having to show hotel bookings for the whole stay, it is a thing travelers have had to worry about for quite some time now. I’m sure it’s worse and more complicated for anyone of color.