SACRAMENTO, Calif. (AP) -

The state Senate leader is backing off a proposal for a so-called carbon tax and instead wants to dedicate billions generated by California's greenhouse gas reduction law to affordable housing, mass transit and high-speed rail.
    
Senate President Pro Tem Darrell Steinberg said Monday that his willingness to pivot from a consumer fuel tax was driven by the need to fund environmentally related infrastructure projects while helping low-income Californians with housing.
    
The Sacramento Democrat also threw his support behind Gov. Jerry Brown's budget proposal to help finance the $68 billion bullet train.
    
Steinberg's initial plan was quickly criticized as a direct hit to Californians even though the current cap-and-trade revenue system is expected to raise gasoline prices starting next year. His revised plan has backing from transit, housing and environmental groups.