Monica Goodling, mens rea and crimnal liability

From the NYTimes afternoon posting of a story on Ms. Goodling's tesimony:

Ms. Goodling said that in the course of her five years at the Justice Department, she interviewed hundreds of job applicants, most of them for positions subject to partisan political appointment. “But some were applicants for certain categories of career positions,” she went on, alluding to workers who are supposed to function free of naked political considerations.

“In every case, I tried to act in good faith, and for the purpose of ensuring that the department was staffed by well-qualified individuals who were supportive of the attorney general’s views, priorities and goals,” she said, before acknowledging that she might have gone too far in asking overtly political questions of some career applicants.

But Representative Bobby Scott, Democrat of Virginia, was not satisfied. “Did you break the law?” he asked. “Is it against the law to take those considerations into account?”

“I believe I crossed the line, but I didn’t mean to,” she replied. [emphasis added]

Translation: "I now realized that I in fact violated the law, but even if I weren't guaranteed immunity from prosecution, I would still be protected by the fact that 'I didn't mean to.'"

What, precisely, does this mean? How often does the DOJ's criminal division take a pass on prosecuting a non-immunized law-breaker on the grounds that he/she "didn't mean to" violate rather clear federal law? The Civil Service Act, after all, goes back to 1886, and it is a fundamental building block of the modern bureaucratic state that depends on some distinction between crass politics and bureaucratic competence. I know that mens rea is usually a requirement for criminal liability, but can anyone take seriously the "I didn't mean to" defense as rejection of adequate mens rea? I don't teach criminal law, so I am more than ready to stand corrected by my betters on this point.
An aside: the most interesting part of the District Court's decision in the 2001 Emerson case on gun rights was its willingness in effect to make ignorance of an obscure part of federal law (the illegality of firearms possession by anyone who had been served with a restraining order in a domestic violence case) an excuse. Perhaps it is understandable that most of the attention went to the Second Amendment part of the opinion, but the claim that Due Process protects someone who is reasonably ignorant of the law is of far greater importance, both theoretically and practically. But even if one is sympathetic to limiting de facto strict liability in the modern administrative state, shouldn't a "qualified lawyer" working for the United States Department of Justice be expected to be aware of basic civil service statutes?

One wonders how seriously the "I didn't mean to" defense would be taken if the person articulating it were, say, a 50-year-old non-immunized male who had taught constitutional law in Arkansas and, indeed, had been Attorney General of the State to boot. And I recall that an even dowdier Arkansan who had been Deputy Attorney General of the United States actually went to jail for violating federal criminal law. But perhaps "we" expect less of an attractive 33-year-old with long-flowing blonde hair (check out the picture accompanying the Times story) who graduated from Regent Law School. (Is this another example of the "tyranny of low expectations"?) (One can also count up the number of invidious stereotypes that may or may not be working to Ms. Goodling's detriment/advantage in her debut as a public figure.)