He should've gone to Chicago instead!
Exercise increased caution due to crime, civil unrest, and the possibility of kidnapping. Some areas have increased risk. Read the entire Travel Advisory.
Do not travel to:
The Colombian-Peruvian border area in the Loreto Region due to crime.
The Valley of the Apurímac, Ene, and Mantaro Rivers (VRAEM), including areas within the Departments of Ayacucho, Cusco, Huancavelica, and Junin, due to crime and terrorism.
The Puno Region, including the Peruvian side of Lake Titicaca, and the Apurimac Region due to civil unrest.
Country Summary: Crime, including petty theft, carjackings, muggings, assaults, and other violent crime, is common in Peru and can occur during daylight hours despite the presence of many witnesses. Kidnapping is rare, but does occur. The risk of crime increases at night. Organized criminal groups have been known to use roadblocks to rob victims in areas outside of the capital city of Lima.
Demonstrations occur regularly throughout the country. Public demonstrations can take place for a variety of political and economic issues. Demonstrations can cause the shutdown of local roads, trains, and major highways, often without prior notice or estimated reopening timelines. Road closures may significantly reduce access to public transportation and airports and may disrupt travel both within and between cities.
U.S. travelers participating in Ayahuasca and Kambo ceremonies should be aware that numerous persons, including U.S. citizens, have reported that while under the influence of these substances, they have witnessed or been victims of sexual assault, rape, theft, serious health problems and injuries, and even death.
Currently, U.S. government personnel cannot travel freely throughout Peru for security reasons. Read the country information page for additional information on travel to Peru.
https://travel.state.gov/content/travel/en/traveladvisories/traveladvisories/peru-travel-advisory.html