When you cross the U.S. border, government officials can confiscate your electronic devices, search them, and keep them for a while for additional scrutiny, even when there’s no suspicion of wrongdoing. If you travel out of or into the United States, do yourself a favor and read the EFF’s comprehensive guide to what can happen, and what you can do about it. follow link
Enable Apple TV Subtitles
While a video is playing, hold down the Select (center) button on your Apple TV remote to bring up the Options menu, then choose the Subtitles view. If there are embedded or external subtitles associated with the video they will appear in the list. If you are using Silver Screen to AirPlay video to the Apple TV, it will dynamically extract the subtitles and send them to the Apple TV.
Visit Page Zero Software
EFF Guide to Defending Privacy at the U.S. Border
To do this he does not need to have any reason, all he needs is to distrust or dislike you and to have his immediate supervisor back him up.
If you are not a U.S. citizen, you will want to arrange your electronic files so that you can be perfectly open and aboveboard at the border (and you will want to be pleasant and respectful no matter what).
Some years ago, Farley Mowat was denied entry. It happens that that Farley Mowat had been invited to the States to receive a literary award, and so was uniquely able to publicize his experience. He wrote a delightful book about it, "My Discovery of America." Mowat was barred on order from on high but now field officers with even less knowledge have the discretion to do the same.