Conservative radio show host Rush Limbaugh's attacks on President Barack Obama for having won the Nobel Peace Prize are "very wimpy," one senator said Friday.

Sen. Barbara Boxer (D-Calif.) called out the host for his criticism of the decision to give the president the award during an appearance Friday night on MSNBC's "The Rachel Maddow Show."

"What he`s saying is very wimpy in a way," pointing to Limbaugh's criticism of Obama as having been "emasculating" the U.S. in the eyes of the Nobel committee.

"You can always use the fist. That`s the easy part, especially when it isn`t Rush Limbaugh`s fist," Boxer said. "He doesn't care if they did go abroad and fight wars."

"I think that this president understands that`s a last resort," she added.

Limbaugh had characterized the award for Obama as an endorsement of policies the host said had weakened the U.S., a position which Limbaugh alleged the Nobel Committee endorses.

"He's basically emasculating this country and they applauded today with this award," Limbaugh said during his Friday show.

Watch the video of the segment below: