Following the passage of a 2-month extension of the Highway Trust Fund (HTF) prior to the Memorial Day Recess, Congress must now focus its energies on coming up with a mechanism to fund the program after July 31, 2015.  Nearly $11 billion is estimated to be necessary to keep the HTF solvent through the end of the year.  Democrats in both the House and Senate have expressed opposition to passing another short-term extension, and some have indicated that they will vote against such an approach.