By Keith Laing - 05/16/11 06:05 PM EDT
Former Massachusetts Gov. Mitt Romney compared it, for intrusiveness, to the federal healthcare law that is anathema to conservative activists, and former Minnesota Gov. Tim Pawlenty called it "preposterous" in a recent debate in South Carolina.
Gingrich, who officially declared his candidacy last week, took aim at the lawsuit shortly thereafter.
The agency is "basically breaking the law to try to punish Boeing and to threaten every right-to-work state," Gingrich said on NBC's "Meet the Press" Sunday, where he was the first of the venerable political show’s "Meet the Candidates" interview series of the 2012 cycle.
On Friday, Gingrich said the NLRB should be defunded if it goes ahead with the suit.
The White House has said President Obama will not comment on the lawsuit because the NLRB is an "independent agency."