Lisa Desjardins:

The papers were leaked to a German newspaper and then shared with the International Consortium of Investigative Journalists, in all, more than 380 journalists in 67 countries.

One of many investigations getting a lot of attention, the investments of commerce secretary Wilbur Ross. Ross kept a stake in a shipping company called Navigator Holdings after he became secretary. One of Navigator's top clients is the Russian energy company Sibur, whose owners include Vladimir Putin's son-in-law and Kremlin-linked oligarchs on the U.S. sanctions list.

Critics are calling for an investigation, but the commerce secretary said he's done nothing wrong.

Sasha Chavkin is a reporter with the International Consortium of Investigative Journalists who broke this story and has been working on this for nearly a year.

Thank you so much for joining us.