Washington ? Senior House Democrats drafting health care legislation are considering slapping an unspecified financial penalty on anyone who refuses to purchase affordable health insurance, a key committee chairman said Monday.

In addition, officials said Democrats are considering a new tax on certain health insurance benefits as one of numerous options to help pay for expanding coverage to the uninsured. No details on the tax were immediately available, and no final decisions were expected until next week at the earliest.

These officials said drafters of the legislation will include a government-run insurance option as well as plans offered by private companies. The government option draws near-unanimous opposition from Republicans and provokes concerns among many Democrats, as well, although President Barack Obama has spoken out in favor of it.