BANGOR (WGME) -- Bernie Sanders is hoping to help Hillary Clinton gain more support in Maine.

Throughout the Democratic Primary, Bernie Sanders was highly critical of Hillary Clinton. But now he's a big part of the campaign to get her elected as President.

Several hundred people welcomed Bernie Sanders to Bangor Friday morning, who immediately tore into Donald Trump over his tax controversy.

"Here's something to get angry about,” Sanders said. “You got a multi-billionaire. A guy, who has mansions all over the world, lives in the lap of luxury. Has wealth that the 99 percent have no clue what it's about. And this guy pays nothing in federal income tax."

Even though Sanders has criticized Secretary Clinton for her ties to Wall Street, he believes she is the best candidate to look out for the middle class and create good paying jobs.

"We need to invest in our infrastructure,” Sanders said. “And when we do that we create millions of good paying jobs."

He says Trump talks about bringing jobs back to America, but says he doesn't walk the walk.

"If you are so concerned about outsourcing American jobs, why do you have factories in Bangladesh where you're paying workers 30 cents an hour?" Sanders said.

Sanders and Clinton also support tuition free public colleges and universities, so every student who works hard can get a college education regardless of their family's income.