Steven Overly, tech reporter for Politico, discusses the United States' Supreme Court case against Microsoft. The case could have a global impact on email security.

Overly says the question at the heart of the case is whether foreign governments should have access to your email. Tech companies worry the answer will be yes if the U.S. wins this case.

The UK passed legislation in 1986 for mail security but Overly notes the world looked very different back then.