Tom Mix went the Douglas Fairbanks route with this silent West, augmenting the usual sagebrush melodramatics with a clear sense of comedy, even satire. The tale of an immigration officer battling a gang smuggling Chinese labor across the border from Mexico was merely an excuse for Mix to perform a series of fanciful stunts, including scaling the Grand Canyon on horseback and rescuing the heroine from an airplane. Diehard Western fans decried the lack of realism but audiences flocked to see this film which, more than perhaps any other, changed Mix from a popular Western star into an internationally recognized showman..
~ Hans J. Wollstein, All Movie Guide