Which is why more money needs to go into customs inspectors and drug sniffing dogs, and NOT divert all money to building a longer wall/fence.
Nope. A wall/fence is permanent. Inspectors and dogs are one Democrat budget cut from going away.
Putting the drug cartels out of business with better inspections would make Democrat budget behavior irrelevant. Budget cuts on border patrol and inspection personnel for long walls are also a potential action by Democrats or Republicans. Remember lots of Republican businesses rely on cheap labor. If walls are not patrolled regularly, crossing, cutting or burrowing all become feasible. Also other electronic monitoring equipment and servicing is also needed and costs money.