Sanders to Tim Ryan: 'I do know that, I wrote the damn bill'

White House hopeful Sen. Bernie SandersBernie SandersPoll: Support for Sanders among college students reaches highest level since April The Hill's Morning Report — Trump and the new Israel-'squad' controversy Native American advocates question 2020 Democrats' commitment MORE (I-Vt.) rebuked his presidential opponent Rep. Tim RyanTimothy (Tim) John RyanHead of flight attendants group claims 'broad support' for 'Medicare for All' among union members 2020 Democrats release joint statement ahead of Trump's New Hampshire rally Iowa draws starstruck political tourists from around the world MORE (D-Ohio) after Ryan questioned how comprehensive his “Medicare for All” platform would be.

Sanders maintained that his Medicare for All platform would offer more comprehensive health care coverage for people who would eventually lose their private plans, noting that it would include dental and vision plans for seniors as well as other facets, to which Ryan responded “You don’t know that, Bernie.”

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“I do know that, I wrote the damn bill,” Sanders fired back to applause, referencing the Medicare for All bill he’s introduced in the Senate.

The exchange was part of a longer, fiery debate among the field about the federal government’s role in providing health care, with Sanders and Sen. Elizabeth WarrenElizabeth Ann WarrenWarren unveils Native American policy plan Poll: Support for Sanders among college students reaches highest level since April Obama has taken active interest in Biden's campaign: report MORE (D-Mass) supporting a Medicare for All platform

But several moderates touted different plans that would allow Americans to keep private insurance and either expand the Affordable Care Act or include a public option to supplement private plans.

“Why do we got to be the party of taking something away from people?” former Rep. John DelaneyJohn Kevin DelaneyNative American advocates question 2020 Democrats' commitment Head of flight attendants group claims 'broad support' for 'Medicare for All' among union members 2020 Democrats urge Israel to reverse decision banning Omar, Tlaib visit MORE (D-Md.), a staunch centrist, asked during the debate.

Polling has showed that health care has emerged as a top issue for Democratic voters, though what should be the solution to rising premiums and scant coverage has produced a sharp divide within the primary field.