As Sen. Bernie Sanders recovers from a heart attack at his home in Burlington, Vt., his presidential campaign is pushing ahead without his typical frequent campaign appearances and trying to foster a sense of business as usual.

Surrogates fanned out across the early primary states over the weekend, in some cases replacing Sanders at stops he was not able to make. Sanders supporters also joined striking workers on their picket lines.

And on Monday, the Sanders campaign released a plan to “get corporate money out of politics,” a proposal that would eliminate big-dollar fundraising for all federal elections, enact a constitutional amendment to declare that campaign contributions are not speech, and take aim at the Democratic National Convention.

Fitting with his longstanding efforts to nail down the most left-leaning or purist positions in the party, the changes would undermine the fundraising approach of not only President Trump and the Republicans, but almost all of Sanders’s fellow Democratic candidates, too.

Sanders’s new plan would ban the Democratic National Convention from taking donations from corporations or lobbyists, and it would prohibit national party chairs from future lobbying.

In a statement released with the plan, Sanders cited large corporate donations to the 2016 Democratic convention, saying such companies as Bank of America, Peco Energy, Comcast and Facebook each gave more than $1 million.

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