The woman behind the blog post "I am Adam Lanza's mother" - referring to the gunman in the Newtown massacre will be on Capitol Hill tomorrow.
As you may recall, Erin Burnett spoke to blogger Liza Long in December, shortly after the shooting, because her blog about her 13-year-old son Michael had set off a national debate on mental health.
Long wrote, "I live with a son who is mentally ill," she wrote. "I love my son. But he terrifies me."
Her blog went viral, with people loathing her and cheering her.
Liza Long comes OutFront as she prepares to testify about violence and severe mental illness.