Vermont Sen. Bernie Sanders Bernard (Bernie) SandersPush to end U.S. support for Saudi war hits Senate setback Sanders: 'I fully expect' fair treatment by DNC in 2020 after 'not quite even handed' 2016 primary Sanders: 'Damn right' I'll make the large corporations pay 'fair share of taxes' MORE (I) on Friday blasted President-elect Donald Trump Donald John TrumpHouse committee believes it has evidence Trump requested putting ally in charge of Cohen probe: report Vietnamese airline takes steps to open flights to US on sidelines of Trump-Kim summit Manafort's attorneys say he should get less than 10 years in prison MORE's reported selection of Goldman Sachs President Gary Cohn for a top economic adviser role.

“It’s called a rigged economy and this is how it works,” Sanders tweeted.

It’s called a rigged economy and this is how it works. https://t.co/npoLcKQmfJ — Bernie Sanders (@SenSanders) December 9, 2016

News outlets reported Friday that Trump has chosen Goldman Sachs president Cohn to direct the National Economic Council, which advises the president on economy policy.

Sanders, a staunch critic of Wall Street, made the "rigged economy" one of his main campaign issues during his run for the Democratic presidential nomination.

“We’re going to transform America and create an economy that works for all of us, not just the billionaire class,” Sanders says on his website.

Trump struck a populist tone during the campaign as well, promising to "drain the swamp" in Washington.

But critics like Sanders say Trump's Cabinet selections undermine that promise, with Cohn the second figure with ties to Goldman Sachs to get a major appointment.

During a rally in Des Moines, Iowa, on Thursday night, Trump defended his Cabinet selections.

“One newspaper criticized me, ‘Why can’t we have people of modest means?’" he said. “Because I want people that made a fortune. Because now they’re negotiating with you.”