We've all long known that anyone the Democrats nominate get a complete pass (if they have the right ethnic cachet) or softball questions (if they don't).
Anyone nominated by the GOP will get a rectal exam with a microscope.
Is this supposed to be news?
I guess you missed the part where the investigation is being done by Romney and his "trusted aides".
From the article: “They will be asked for their agreement to join him on the GOP ticket if chosen, and in the meantime, to submit to a most intrusive and far-reaching vetting by lawyers and advisors working for the campaign,” writes A.B. Culvahouse, a lawyer in the Washington office of Los Angeles-based O’Melveny & Myers. “No other candidate, not even the presidential nominee himself, is subjected to the same scrutiny.”
AND...I'll bet the "vettees" will be just a leetle bit reluctant to give all that secret and confidential information to Mitt's "lawyers and advisors"...
Mitt has shown NO reluctance to use the dirtiest tactics against other Republicans, and IF he is elected will have a tidy little pot of of gold to use against any future candidates in the next election...or to hand off to his chosen successor.