A Starbucks employee writes a message on a cup of freshly brewed coffee at a local store in Washington, DC on December 26, 2012. Starbucks stirred the political pot Wednesday by urging its baristas to write "come together" on its cups as a way to pressure US lawmakers to compromise on a deal to avert a year-end fiscal crisis.

Starbucks is getting into the debate over the looming "fiscal cliff."

CEO Howard Schultz has posted a letter online explaining that for the rest of the week, employees in the megachain's Washington, D.C., stores will write "Come Together" on customers' coffee cups.