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
Simulate Multiple Simultaneous Effects in Game Your Video
Although you cannot overlap two audio/motion effects at the same time in Game Your Video, you can always re-edit the video to create stunning effects. So, if you are editing a dance video, for instance, and have applied the Echo effect to one of the dance moves, you can edit the video again to apply a Slow Motion effect as well, for a great result.
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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.