Former President Donald Trump is backing “America First” candidate Blake Masters in the Arizona Republican Senate primary. In his endorsement, Trump referred to Blake Masters as a “great modern-day thinker.” “Endorsed by President Trump! Doesn’t get any better. Sights set on November 8. The message: America First,” Masters reacted to the news. Blake Masters is the president of the Thiel Foundation the co-author with Peter Thiel of the book “Zero to None: Notes on Startups, or How to Build the Future.” Masters also has the backing of billionaire Peter Thiel.