The leader of the Zetas drugs cartel, notorious for its violence, has been seized in Mexico by security forces.

Omar Trevino Morales was captured in the city of Monterrey in the north of the country.

It is the second arrest of a drug lord in a week after Servando "La Tuta" Gomez of the Knights Templar drug cartel was arrested.

Katy Watson reports.-- it shouldn't be a partisan issue, it's just common sense," said James Barden, 13, whose 7-year-old brother Daniel was killed in the horrific shooting at Sandy Hook Elementary School in Newtown, Conn.

"I feel that we owe it to Daniel cause his life needs to mean something," Barden said, on why he pushed for gun legislation after the Sandy Hook shooting.

"I've never done anything like this before, it's different," 11-year-old Natalie said. Asked what she wants the world to know about her brother, Natalie told ABC, "He was just so thoughtful and he thought about everybody. He was always happy."

Newtown family members stood behind President Obama Wednesday afternoon as he admonished lawmakers for siding against new limits on gun sales. Mark Barden, Daniel's father, introduced the president and