Grover Norquist, president of the Americans for Tax Reform, told CNBC that spending cuts—not higher taxes—are what's needed to fix the country's fiscal problems.
Last week, Alan Simpson and Erskine Bowles told CNBC that the two sides need to understand the magnitude of the problem and work to reach a compromise to avoid the massive automatic spending cuts and tax increases scheduled to hit at the beginning of the year.
Simpson, a former Republican senator from Wyoming, blamed political culture in Washington for preventing a deal and said Norquist's "pledge" that a politician will not raise taxes is a key stumbling block. (Read More: US Nears Fiscal Disaster: 'Washington Doing Nothing' .)
Norquist pushed back on CNBC's "Squawk on the Street" Monday.