A faction of eight companies, including Philips, Hewlett-Packard and Sony, broke away.
But, he added, "I cannot remember a time when one faction of one party promises economic chaos if it can't get 100 percent of what it wants".
The obstacle, for advocates of public financing, is the State Senate, which is controlled by a coalition of Republicans and an independent faction of four Democrats.
"One faction of one party in one house of Congress in one branch of government doesn't get to shut down the entire government," Mr. Obama told reporters at the White House on Monday afternoon.
"But one faction of one party, in one house of Congress, in one branch of government doesn't get to shut down the entire government just to refight the results of an election," Mr. Obama said.
"Let me be more specific: One faction of one party in one house of Congress in one branch of government shut down major parts of the government, all because they did not like one law".
But one faction of one party in one house of Congress in one branch of government doesn't get to shut down the entire government just to refight the results of an election.
But what I've also said is that it is not acceptable for one faction of one party in one chamber to say, "Either we get what we want, or we'll shut down the government".
Mr. Obama said any solution must be bipartisan, having "the support of both parties that were sent here to represent the American people, not just one faction of one party".
In a recent interview (in Spanish) with El Faro, an online newspaper, leaders of a faction of one gang said the daily number of killings would soar to above 20 a day if the truce collapses.
