While traveling in Russia, you are subject to its laws. This is true even if you are a U.S. citizen. Foreign laws and legal systems can be vastly different from those in the United States and criminal penalties will vary from country to country. There are also some things that might be legal in the country you visit, but are still considered illegal in the United States. For example, U.S. citizens can be prosecuted under U.S. law if they buy pirated goods. Engaging in sexual conduct with children or the use and/or dissemination of child pornography in a foreign country is also a crime prosecutable in the United States.


отсюда

Давно у России имидж страны-поставщика детской проституции и порнографии?