Do they want to?
Forrest McDonald, A Constituional History of the United States, (1984)
Barack Obama, Nancy Pelosi and Harry Reid are all on record as believing in a "single payer" system -- that is, a government monopoly able to impose its own will on everybody. Even the current and future problems of Obamacare can help them to reach that goal.
Between the late 1950s and the early 1980s government in the United States became so big and so complex that it all but lost the ability to function. A medical term, 'iatrogenic disease,' illness resulting from treatment by a physician, fairly well describes what happened. Starting with the New Deal, government attempted to solve problems of a nature and magnitude beyond the capacities of a limited constitutional system and perhaps of any system. Some remedies worked, others did not. When they did not, the tendency was to create a new program on top of an old one, rather than to scrap the old. By the early 1960s this jerry-built machinery was beginning to produce, or aggravate, social problems of a scale previously unknown in America. Every governmental 'remedy' produced a new governmental-caused sickness; and yet Americans had become so addicted to the habit of believing that government could cure everything that the response of the late sixties was wave after wave of crash programs. These created new problems that, in the seventies, resulted in more programs. By the time considerable numbers of people began to suspect that they were overgoverned, the reality was that, though government interfered in their lives from cradle to grave, it scarcely governed at all, in the original constitutional sense of the term. Government had ceased to be able to protect people in their lives, their liberty, and their property; and it had lost the capacity to establish justice, ensure domestic tranquility, provide for the common defense, and promote the general welfare.