Indeed, Obama's right-wing critics are constantly carping that his team traffics in Chicago-style politics.

FORBES: Magazine Article

Lighter trading in many of the financial instruments that Goldman traffics in.

FORBES: Is Goldman Stingy With Its Dividends?

He plays a charismatic drifter named Mud in Jeff Nichols's third feature, which traffics unerringly in truth, delicious surprise, unadorned beauty and unforced wisdom.

WSJ: Classic, Your Name Is 'Mud' | Mud | At Any Price | The Reluctant Fundamentlist | Pain & Gain | Film Reviews by Joe Morgenstern

Hip hop is still fundamentally an art form that traffics in hyperbole, parody, kitsch, dramatic license, double entendres, signification, and other literary and artistic conventions to get its point across.

NPR: Author Comes to Hip-Hop Music's Defense

Nada Surf has been plugging away since the mid-'90s, beginning as an alt-rock one-hit wonder (with the novelty song "Popular") and ultimately morphing into a rare creature: an indie-pop band that traffics in uplift and empathy.

NPR: Nada Surf: Five Minutes of Feeling Good