Hillary Clinton’s environmental record has already been viewed as a problem, with Clinton generally taking conservative positions to protect the business interests she receives money from. She has been trying to capitalize politically on the Flint water situation prior to the Michigan primary. A report from investigative reporters David Sirota and Andrew Perez shows how the situation might turn into a political negative for Clinton.

Sirota and Perez reported on a vote in which Clinton voted against banning a possible carcinogen:

When the Democratic presidential contenders meet on Sunday for their debate in Flint, Michigan — where thousands of residents have been poisoned by polluted water — the candidates’ records on clean water policy are likely to be in the spotlight. Hillary Clinton seems eager for that discussion, recently telling NPR: “The idea that you would have a community in the United States of America of nearly 100,000 people who were drinking and bathing in lead-contaminated water infuriates me.”

But despite that rhetoric, the issue of clean water may be politically perilous for the leading Democratic candidate, thanks to her vote against banning a possible carcinogen at the center of one of the largest water pollution scandals in recent history.

Facing reports that a controversial fuel additive was contaminating water supplies across America, Clinton as a senator in 2005 opposed a bipartisan measure to ban the chemical — even though Bill Clinton’s Environmental Protection Agency had first proposed such a prohibition. At roughly the same time, one major company producing the chemical also tried to use provisions in a trade deal backed by Hillary Clinton to force local governments in the United States to let it continue selling the toxic compound…

Breaking with then-Sen. Barack Obama, Clinton joined 14 Republicans and 11 Democrats in voting against the measure to phase out MTBE, which passed the Senate by a vote of 70-26. Critics of the amendment to ban MTBE, like New York Democratic Sen. Chuck Schumer, chargedit would end up forcing states to use more ethanol.

When Clinton cast her vote against banning MTBE, she was in the midst of a re-election campaign in which she raised more than $74,000 from the oil and gas industry, according to data compiled by the Center for Responsive Politics. But her record was not one of unanimous support for that industry…

One Clinton critic says her vote against banning MTBE could be a vulnerability. Last year, Democratic operative Matt Barron cited Clinton’s vote as one of a handful of issues that could cost her in the presidential campaign as she tries to win over voters in rural areas.