I'm Jeffrey Rosen, president and CEO of the National Constitution Center and welcome to

We The People, a weekly show of constitutional debate.

The National Constitution Center is a nonpartisan non-profit chartered by Congress to increase

awareness and understanding of the Constitution among the American people.

This past April, California police announced they had a suspect for the so-called Golden State

Killer using genetic data from old crime scene samples, they uploaded the suspect's information into a genealogy website,

enabling them to identify his distant relatives and eventually narrow the pool down to find the suspect.

This case has raised privacy concerns and also people who think it's great for law enforcement,

leading many to wonder about the future of genetic privacy and the Fourth Amendment.

Joining us to discuss and illuminate and unpack this important and complicated topic, are two of America's... and School. She is a nationally recognized expert in forensic DNA typing and the author of

Inside the Cell, The Dark Side of Forensic DNA. Andrea Roth is an assistant professor of law

at Berkeley Law School.

She previously served as an attorney with a public defender service for the Washington DC

Public Defender Service.

She's written extensively on the use of DNA in criminal law and procedure.

Erin, Andrea, thank you so much for joining.

Thanks for having me.

Thank you.

Erin, let us begin with you. You had a memorable quotation in the press saying that using DNA matching

once you draw that family tree, every male on the tree is a suspect

until they prove their innocence.

Take us through how exactly the suspect a Golden State killer was caught

...