Immigration crackdown causing crops to rot

Great way to make America Great again: send all the important workers back to Mexico. Farmers in CA are reporting that they are finding it harder to find immigrant workers to harvest their crops so some of the harvest just rots on the vine. Which of course incurs huge costs to the farmers and increased prices to the consumer. Farmers are offering increased wages, paid time off and retirement plans to these workers but it's not enough, given their fear of instant deportation. Isn't Dump just doing a great job at making us great again?