Maybe this is why David Broder is leading the “Janet is Cool!” parade.

“Some Democrats have joined in calling for Homeland Security Secretary Janet Napolitano to step down following the attempted bombing of a Northwest Airlines flight a week ago.

Though the CIA and an agency under the Director of National Intelligence have been under particular scrutiny in the preliminary review of possible missteps, Napolitano so far has taken the most heat from lawmakers. Not only does her department oversee the Transportation Security Administration, but her initial claim Sunday that “the system worked” was widely ridiculed and interpreted by critics as a sign that she’s in over her head.

Some Republicans, who’ve taken issue with her in the past for calling terrorist acts “man-caused disasters” and other remarks, started calling for her ouster in the spring. The failed bombing on Christmas Day revived those calls.

Now Democrats have joined the chorus.

New Jersey State Senate President Richard Codey, a Democrat, wrote a letter to Napolitano this week calling on her to step down. He said Napolitano, an attorney and former Arizona governor, does not have the experience for the post she is in.

“We should have someone who doesn’t need to go in there and learn about terrorism, learn about security,” Codey told Fox News. “How close were these 300 people on this plane from losing their lives because homeland security broke down? Boy, it was really close.”

The Department of Homeland Security was created in the wake of the Sept. 11, 2001, terror attacks and has grown into one of the largest Cabinet departments in the federal government. Charged with keeping the nation safe from terrorist attacks and responding to natural disasters, it covers the TSA, the Federal Emergency Management Agency, Immigration and Customs Enforcement and a slew of other agencies.

Codey said a candidate “well-versed” in intelligence should step into the job.

Democratic strategist Dan Gerstein also said Napolitano’s response to the incident should be the last straw.

“I tend to think she will be pushed out in the next couple of months,” Gerstein, a former adviser to Sen. Joe Lieberman, I-Conn., said.”

She’s done. Most likely within the next couple of days or at least by week’s end. The Obama administration did a terrible job, not only preventing the attack, but in the aftermath. Her “the system worked” was a classic “Brownie you’re doing a great job”. Obama doesn’t take embarrassment well and while he’s on vacation Napolitano has been no doubt been told in no uncertain terms to polish her resume.

Fact is that somebody has to fall on the sword, or – get thrown under the bus, might as well be her.