Presidential candidate Bernie Sanders will air a new television ad, highlighting differences between him and Hillary Clinton on Wall Street reform.

The new ad, which will be broadcast in Iowa and New Hampshire, draws contrasts between Sanders and Clinton when it comes to reforming Wall Street.

“There are two Democratic visions for regulating Wall Street,” Senator Sanders says in the 30-second ad.

“One says it’s okay to take millions from big banks and then tell them what to do. My plan: break up the big banks, close the tax loopholes, and make them pay their fair share. Then we can expand health care to all and provide universal college education.”

A total of 170 economist have signed a letter in support of Sanders’ Wall Street reforms, despite Clinton claiming her approach would be more effective.

“Secretary Hillary Clinton’s more modest proposals do not go far enough,” the economists and financial experts write in the letter.

“They call for a bit more oversight and a few new charges on shadow banking activity, but they leave intact the titanic financial conglomerates that practice most shadow banking. As a result, her plan does not adequately reduce the serious risks our financial system poses to the American economy and to individual Americans. Given the size and political power of Wall Street, her proposals would only invite more dilution and finagle.”