"We are in a state of chaos right now", he said.
Mexico has taken significant actions in recent weeks to stop the flow of illegal migration into the United States, White House Press Secretary Sarah Sanders told reporters on Tuesday.
At times during the year, as much as 100 percent of avocados in the United States come from Mexico because, among other reasons, the country's growing season lasts all year.
Steve Barnard, CEO of Mission Produce, told Reuters that in the event of a shutdown, the United States would run out of the green fruit in around three weeks as Mexico is the dominant supplier at this time of year.
Children from noncontiguous countries - other than Canada or Mexico - can not be quickly sent back to their home countries because of trafficking laws, creating an incentive for adult migrants to bring children with them on their journey to the U.S. The explosion of immigrants from Central America has left detainment facilities overwhelmed and resources stretched thin.
Acting White House Chief of Staff Mick Mulvaney told CNN Sunday, "If we're going to give these countries hundreds of millions of dollars, we would like them to do more.That is not an unreasonable position".
Economic and policy experts are warning that Trump's threatened border closure between the USA and Mexico could result in a hit of billions of dollars of losses to the economy by disrupting trade and the daily flow of goods and people between the two nations.
She added that the government of President Andres Manuel Lopez Obrador does not intend to militarize the country's southern border in an attempt to deter Central American migrants.
Leon Rodriguez, former director of U.S. Citizenship and Immigration Services warned that the political, logistical and economic consequences of border shuttering will be devastating. "We could prevent a lot of what's happening on the southern border by preventing people from moving into Mexico in the first place".
However, whether the choice to "close the border" would mean a complete halt of goods coming across from Mexico, avocados and all, is unknown.
America gets almost half of its avocado supply from Mexico, and replacing that market share with imports from Peru or elsewhere would be hard on short notice.