President Trump: Security is more important than trade, border shutdown possible

The U.S. imported $5.5 billion worth of fresh vegetables from Mexico in 2017.

The overcrowding of CBP facilities has caused the agency to start directly releasing some migrants caught at the border, instead of transferring them to Immigration and Customs Enforcement, which doesn't have sufficient detention capacity to accept them.

Ebrard added Mexico continued to maintain "a good dialogue" with U.S. authorities and that normal border traffic was expected "as soon as possible". "We are not going to argue about these issues".

"The U.S. threat is being carried out and having an impact on factories, transportation companies and most directly on drivers", truck driver Jose Cota said.

A Kia assembly plant in Pesqueria, Mexico.

It's also unknown if passenger flights coming from Mexico will be affected as well.

White House acting Chief of Staff Mick Mulvaney said that "something dramatic" would need to occur for Trump not to keep his word on closing the border this week. In other words, Trump is demanding a regime of summary deportation for anyone daring to set foot on USA soil, riding roughshod over worldwide laws protecting refugees and the right of asylum, as well as constitutional principles of due process.

Earlier in the week, CBP Commissioner Kevin McAleenan said the border was at its "breaking point" and that there were not enough agents to respond to the crisis. But that was not unusual for Mexico, which has for years been cracking down on migration.

"It's going to be insanity", said Phil Lempert, founder of supermarketguru.com, which tracks industry news and trends.

There's more to cross-border business than produce.

The President said he'd spoken to Democrats about a potential immigration deal, and "all the sudden they're changing" their minds. And the number of avocados now growing in California won't magically double in the next month before they are ready to be harvested.

Blueberries, raspberries and strawberries also could be scarce, though Lempert said a berry shortage could be mitigated with imports from Chile and domestic production.

He says some don't realize the value of the close relationship between the USA and Mexico, especially at the border, and that the border should only close in extreme cases like a declaration of war.

Food price hikes aren't limited to supermarkets.

"You can take the president seriously", senior adviser Kellyanne Conway said.

"Mexico, as you know, as of yesterday has been starting to apprehend a lot of people at their southern border coming in from Honduras and Guatemala and El Salvador and they're really apprehending thousands of people".

"Any sort of protracted delay would be disastrous". "We've seen them take a larger number of individuals" and hold those who have asylum claims in Mexico while they are being processed in the United States. Now they're going to stop them.

"We are watching it and looking for ways to allow the freight passage, some people call it truck roads, and there are ways you can do that which would ameliorate the breakdown in supply chains", Kudlow told CNBC's Sara Eisen Tuesday.

There are signs that the shutdown is being progressively implemented, with Homeland Security Secretary Kirstjen Nielsen ordering 750 agents transferred from ports of entry to Border Patrol units rounding up refugee families attempting to enter the U.S. in more remote areas.

  • Leroy Wright