CBP operational control goes at least 100 miles in when enforcing immigration laws, their check stations farther.
While it’s true that CBP has immigration authority well inside the border they have zero authority to operate without approval of the local sheriff. And they have even zeroer authority to go wading around private or state property without appropriate warrants. And if there is wire or other security measures on private or state land, supreme court be dammed, they had best mind their manners before screwing with it. They really, really, need to keep their wire cutters in their pockets.
CBP operational control goes at least 100 miles in when enforcing immigration laws, their check stations farther.
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But the CBP isn’t enforcing immigration laws.