The Politico reports that the administration's announced new employer-verification rules might face some resistance:

Laura Reiff, co-chairwoman of the Essential Worker Immigration Coalition, said her organization had sought support from Congress to block funding for the enforcement of the no-match rule, which would require employers to fire workers unable to clear up discrepancies between their Social Security numbers and government records.

“But with Congress being so gun-shy about opposing anything dealing with enforcement, we didn’t get very far,” Reiff said.

So Reiff, along with Monica Guizar, an attorney with the National Immigration Law Center, told immigration advocates on a conference call Wednesday that they were exploring other options. Among the ideas under consideration are seeking approval of a resolution under the Congressional Review Act, a rarely used tool that allows Congress to review and overrule regulations, or raising the question of whether the rules violate the Regulatory Flexibility Act, which require agencies to consider the impact of their regulatory actions on small businesses.

So it looks like Congress rebuffed an attempt to deny funding for these new rules (I wonder whom they "didn't get very far" with). Could these other tactics have much success? From reports that I've seen, it looks like the Congressional Review Act has been used very rarely (only one successful use as of March 1, 2005). Are there any other legal challenges in the works?