Apple co-founder Steve Jobs's widow, Laurene Powell Jobs, has taken on a public role to back immigration reform. She is doing it using some of the tactics that her late husband employed to great effect at the technology giant.

Financial regulators are taking a harder line on exchanges amid concerns over their ability to police the markets they operate, as the SEC prepares to hit Nasdaq with a record penalty.

A suicide bomber targeting a coalition military convoy in the Afghan capital killed at least 15 people, including six Americans, and injured many more.