As President Trump mulls a new executive order on immigration, many are wondering just how much U.S. border crossings might change under the new administration.

Already, U.S. Department of Homeland Security Secretary John Kelly has said he wants visitors to the U.S. to have to hand over cell phones and passwords so border agents can see what they might be up to.

But even without a directive, U.S. Customs and Border Protection (CBP) and U.S. Immigration and Customs Enforcement (ICE)  have fairly broad powers that stretch well beyond border checkpoints.

Check out the slideshow above to see just what immigration enforcement officers can and can’t do at and around the U.S.’s borders.

For starters, CBP has authority to operate up to 100 miles from any land or sea border. That puts roughly 200 million people -- about two-thirds of the U.S. population -- in areas where immigration officers operate, according to information from the American Civil Liberties Union.

That means many people who might not even think about crossing a border could just as easily run into Customs agents.

And those agents have what the ACLU calls “extra-Constitutional powers” in many cases, meaning they can circumvent Fourth Amendment protections against illegal search and seizure.

Technically, Customs agents can’t just pull anyone over because of ethnicity, or because the agent has a hunch about them. But if agents have a “reasonable suspicion” of an immigration violation or crime, they have a fairly blank check to take action.

To avoid unnecessary hassles at the border or elsewhere, it’s good to know just how far agents can go and how to be prepared.

Traveling to and from Canada -- our closest land and sea border crossing -- U.S. citizens age 16 and older need to carry a passport or enhanced driver’s license (or a FAST card or NEXUS card). Those who aren’t citizens will need a permanent resident card.

For those 15 and under, a birth certificate or a Canadian citizenship card will be necessary.

At a border crossing -- driving in a car, getting off a boat or getting off a plane -- travelers should know that border agents can conduct a “routine search” regardless of suspicion of any crimes. That would include searching luggage or looking in a vehicle, according to ACLU information.

Outside of the border crossings but within the 100-mile zone, agents need probable cause to conduct a search of person or vehicle, and things get more technical when they enter private property.

In our slideshow above, we spell out what immigration enforcement officers can and can’t do and where they can and can’t do it. Click through to get a better idea of your rights both at a border crossing and anywhere within 100 miles of a border.


Daniel DeMay covers Seattle culture, business and transportation for seattlepi.com. He can be reached at 206-448-8362 or danieldemay@seattlepi.com. Follow him on Twitter: @Daniel_DeMay.