This Wednesday, June 5, 2019 photo shows one of many “blue agave

EL ARENAL, Mexico (AP) — After decades of building a domestic market for Tequila Cascahuín, Salvador Rosales readied the family business for a plunge into the U.S. export market this year. He made sure he had a stable supply of high-quality blue agave, the succulent whose juice is distilled into tequila, so that once they planted their flag, they wouldn't disappoint.

Tequila Cascahuín envisioned exporting about 350 to 420 cases to the United States this year and building from there. But those plans could be derailed by President Donald Trump's threat of tariffs starting at 5% and rising higher until he is satisfied Mexico is doing enough to stop the flow of Central American immigrants through its territory.

Last week Trump shocked Mexico with a June 10 deadline to impose tariffs on all Mexican imports.

In this Wednesday, June 5, 2019 photo, Salvador Rosales, director of the family-run business Tequila Cascahuin, speaks during an interview in El Arenal, Jalisco state, Mexico. Last week, President Donald Trump shocked Mexico and many members of his own party with a June 10 deadline to impose unilateral tariffs on all Mexican imports.  “With this increase our sales are going to decrease.” Rosales said.(AP Photo/Refugio Ruiz)
This Wednesday, June 5, 2019 photo, shows a mural showcasing the heart of Mexico's tequila country, at the Tequila Cascahuín distillery, in El Arenal, Jalisco state, Mexico. Almost all tequilas are from in and around the state of Jalisco. (AP Photo/Refugio Ruiz)
In this Wednesday, June 5, 2019 photo, a worker uses a machete to harvest
This Wednesday, June 5, 2019 photo shows shows pinas, the pineapple-looking center of an agave, at the Tequila Cascahuín, in El Arenal, Jalisco state, Mexico. After decades of building a domestic market for Tequila Cascahuín, Salvador Rosales readied the family business for a plunge into the United States export market this year. (AP Photo/Refugio Ruiz)
In this Wednesday, June 5, 2019 photo, workers use pitchforks to turn over agave, mashed by a giant lava stone, or tahona, in El Arenal, Jalisco state, Mexico. Few Mexican exports have the recognition of tequila, the key ingredient to margaritas. (AP Photo/Refugio Ruiz)
This Wednesday, June 5, 2019 photo shows bottles of top-shelf Tequila produced by Tequila Cascahuín in El Arenal, Jalisco state, Mexico. The family-owned distillery envisioned exporting hundreds of cases of tequila to the U.S. this year and building from there. But President Donald Trump’s threat of tariffs starting Monday could derail those plans. (AP Photo/Refugio Ruiz)
In this Wednesday, June 5, 2019 photo, Ramón González, director of the Tequila Regulating Council, speaks during an interview in Guadalajara, Mexico. Last year, Mexico exported more tequila than ever before. More than 80% of those exports went to the U.S., said González. (AP Photo/Refugio Ruiz)
This Wednesday, June 5, 2019 photo shows a wooden barrel at the Tequila Cascahuin distillery, in El Arenal, Jalisco state, Mexico. Tequila Cascahuin envisioned exporting about hundreds of cases of tequila to the U.S. this year and building from there. But President Donald Trump’s threat of tariffs starting Monday could derail those plans. (AP Photo/Refugio Ruiz)