President Barack Obama's expected moratorium on new offshore oil drilling doesn't go far enough, one Democratic senator said Thursday.

Sen. Bernie Sanders (I-Vt.) said he planned to introduce a bill that would ban drilling off the East Coast, West Coast and parts of Florida.

"I think a moratorium is obviously a sensible idea," Sanders said during an appearance on MSNBC. "I would go further — I think you need a permanent ban on the West Coast, East Coast and parts of Florida."

Sanders said he planned to introduce legislation to that effect. The president will hold a news conference Thursday afternoon to address the ongoing oil spill in the Gulf of Mexico.

BP, which leases pipelines that are gushing into Gulf waters, is attempting a procedure to end the spill as the fallout begins to shift more to the political sector.

Sanders's bill can be seen in that vein, and the liberal senator framed it as a bid toward shifting U.S. energy consumption in the direction of conservation.

"The evidence is overwhelming that if you want to save consumers energy, you do it through energy conservation," he said.