Campaign confusion: Romney shifts on health care 'tax'
Top Talkers: Mitt Romney has now waded into the penalty vs. tax debate, saying he believes the ACA is a tax. The Morning Joe panel, hosted Thursday by "Last Word" host Lawrence O'Donnell – including MSNBC's Rev. Al Sharpton and S.E. Cupp along with the Huffington Post's Sam Stein, and former DNC chair Howard Dean – discusses.