What is the Magnitsky Act?

The Russian lawyer and former Soviet counterintelligence agent who had the now famous meeting with Donald Trump, Jr., Jared Kushner, and Paul Manafort about repealing the Magnitsky Act. That law, passed and signed in 2012, denies entrance into the United States of human rights violators. In retaliation, the Russian government began barring the adoption of Russian children by prospective American parents. This presents good background information.