In 1900 Heurich and Amelia traveled to the 1900 Paris World's Fair where his Senate Beer won a silver medal. In 1905 he won a gold medal at the Liège World's Fair and another gold at the 1907 Jamestown Exposition in Jamestown, Virginia. He also fought a number of battles with labor unions and with his fellow brewers. Heurich normally hired union labor, but balked at being told what to do. In 1904 the other DC brewers united against him in a "beer war" when Heurich abandoned an agreement not to sell his beer below a certain price. For three years the other brewers, especially Albert Carry's Washington Brewery Company, tried with the aid of some of the local unions to force saloon-keepers to stop carrying Heurich's products. The effort failed, in part because many local unions did not see why labor should aid one group of businesses in forcing a price-fixing agreement on another. Moreover, Heurich had a better relationship with the local unions than did the other brewers. Of course, the saloon-keepers favored Heurich's lower prices. By 1907 the "Beer War" had petered out and Heurich's Brewery remained the largest in DC.