(CNN) - After competing Republican and Democratic proposals to extend the payroll tax cut failed in the Senate on Thursday night, House Republican leaders assembled their own proposal to extend that tax cut aimed at the middle class and wrap other year-end policy proposals into one bill paid for with a series of spending cuts. But they faced opposition from conservative Republicans.

In addition to a one-year extension of the payroll tax cut, House Speaker John Boehner of Ohio and other top GOP leaders added an extension of unemployment benefits to a legislative package, but tied that assistance to reforms of the program, according to two senior GOP leadership aides. They also added a two-year "doc fix" to the bill that would head off a scheduled cut in physician pay for those treating Medicare patients. Leaders presented the package to their rank-and-file members Friday morning.