(CNN) - John McCain took aim at Barack Obama Wednesday for seeming to suggest in a USA Today editorial that he isn't ready to agree to public financing yet if he is the Democratic Party's presidential nominee.
"Facts are facts and that is that a year ago I signed a piece of paper and committed that if I were the nominee of my party that I would take public financing for the general election campaign, and at that time Sen. Obama made that same commitment," said McCain.
"Now I notice in a column in the USA Today he is talking about other outside money, about working out, look that is Washington double speak," McCain continued. I committed to public financing, he committed to public financing and it is not any more complicated than that. I hope he will keep his commitment to the American people.”
McCain's campaign also circulated a Midwest Democracy Network questionnaire last fall in which Obama wrote, "I have been a long-time advocate for public financing of campaigns combined with free television and radio time as a way to reduce the influence of moneyed special interests."
In his editorial, Obama did not mention public financing, but called campaign finance laws "complex" and proposed an agreement with the Republican nominee on spending limits.
"The candidates will have to commit to discouraging cheating by their supporters; to refusing fundraising help to outside groups; and to limiting their own parties to legal forms of involvement," Obama wrote. "And the agreement may have to address the amounts that Sen. McCain, the presumptive nominee of his party, will spend for the general election while the Democratic primary contest continues."
Responding to McCain's comments, Obama spokesman Bill Burton noted the Arizona senator turned down public financing for his primary campaign.
"John McCain is in no place to question anyone on pledges when he abandoned the latest campaign finance reform efforts in order to run for the Republican nomination and went back on his commitment to take public financing for the primary election this year," he said.
- CNN's Alexander Mooney and Tasha Diakides