Visit TripAdvisor, your source for the web's best unbiased reviews of holidays, hotels, and resorts, worldwide. Also features discount holiday and travel. Trump has said the travel ban is needed to protect the United States against. Exercise increased caution in Mexico due to crime. Some areas have increased risk. Read the entire Travel Advisory. Violent crime, such as homicide, kidnapping, carjacking, and robbery, is widespread. The U.S. government has limited…