Sen. Feinstein plans power plant carbon bill

Sens. Barbara BoxerBarbara BoxerFeds weigh whether carbon pollution should be measured in highway performance Juan Williams: Dems should not take Latinos for granted Reid faces Sanders supporters' fury at DNC MORE (D-Calif.) and Bernie SandersBernie SandersUber to help drivers plan for retirement FULL SPEECH: Donald Trump in Tampa, Florida Sanders slams EpiPen maker: 'Very wrong' to value profits over lives MORE (I-Vt.) have introduced a plan, and Sen. Sheldon WhitehouseSheldon WhitehouseBanking association backs financial transparency bill Shift in care could reverse the opioid epidemic Dems ask Cruz to hold hearing on Trump's Russian hacking remarks MORE (D-R.I.) and Rep. Henry Waxman (D-Calif.) have floated a draft bill, too.

Feinstein’s plan would cover a smaller range of industries than the other measures, and launching the fee at $10-per-ton is less aggressive than the other bills too.

The Center for Climate and Energy Solutions has a handy chart here that compares the Boxer and Whitehouse plans, which differ substantially in structure.

Boxer, chairwoman of the Environment and Public Works Committee, told reporters Wednesday that she will have a climate change hearing some time in July that will include discussion of legislative proposals.

Climate legislation faces remote prospects of passage in the current Congress.

President Obama, within weeks, is expected to announce plans for executive-level actions on global warming, including power plant regulations.