Sanders to top Clinton aide: 'There's always room at Bernie 2016'

Bernie SandersBernie Sanders2020 candidates have the chance to embrace smarter education policies Bernie Sanders Adviser talks criminal justice reform proposal, 'Medicare for All' plan Poll shows Biden, Warren tied with Trump in Arizona MORE’s presidential campaign is exhuming the Twitter archives of a top Hillary ClintonHillary Diane Rodham ClintonPoll shows Biden, Warren tied with Trump in Arizona The Hill's Morning Report - Trump touts new immigration policy, backtracks on tax cuts Hickenlooper announces Senate bid MORE aide in a new attack against the Democratic front-runner. 

“If you ever want to work for a campaign that shares your values on health care, there’s always room at Bernie 2016,” Sanders (I-Vt.) tweeted, linking to a 2013 tweet from John Podesta

Podesta tweeted in November 2013: “Just applied online for Medicare. Took 5 minutes. Single payer anyone?”

Sanders has said he supports a single-payer, Medicare-for-all bill. 

The senator has introduced single-payer bills in previous sessions of Congress, and has argued that his proposal would be cost effective. 

In a fundraising pitch, he has criticized Clinton for taking millions of dollars from the pharmaceutical industry for her presidential run.

As of late December, Clinton had raised about $1.1 million from the pharmaceuticals or health products industries this cycle, according to data from Open Secrets.