A prominent national economist thinks Wisconsin’s agricultural sector could suffer if President Trump delivers on his promise to build a southern border wall.

Marci Rossell, former chief economist for CNBC, spoke yesterday at the Wisconsin Bankers Association luncheon. She pointed out that net migration from Mexico has been negative since 2006, meaning more people from Mexico have been leaving the United States than entering.

Immigration from Mexico peaked in 2000 before tipping negative, she says, as a demographic boom of young people drove many to seek better opportunities in the United States.

Now, she notes most of the immigrants coming over the southern border hail from other countries further south.

She says clamping down on immigration now could spell trouble for the ag workforce, based on previous immigration patterns.

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