Starbucks CEO recently called out former New York Mayor Rudy Giuliani for questioning President Obama's "love" for his country.
Schultz released a statement saying Giuliani's comments were "profoundly offensive to both the president and the office."
The coffee mogul has weighed in several times in recent years at what he sees as political dysfunction.
Last fall, he called on congress to get its act together and act with "civility."
Starbucks CEO Howard Schultz calls out Rudy Giuliani over Obama comments