HARI SREENIVASAN:

Now: how behind-the-scenes moves by a pair of corporate giants are raising red flags about the Trump administration.

Companies routinely advocate and lobby every day on behalf of their business and shareholders. Sometimes, those matters are not just about corporate profits, but also about the economic livelihoods of workers and communities.

But moves by ExxonMobil and Dow Chemical are fueling scrutiny about the corporate influence within the Trump administration.

April 2012, Rex Tillerson, then CEO of ExxonMobil, visits Moscow, wrapping up a deal with the Russian state oil company Rosneft. It calls for investing up to $500 billion to hunt for oil in the Arctic Ocean and Black Sea.