He was asked if he would reverse Obama’s “Executive Order”.
No laws or congress involved whatsoever.
You don’t know what you are talking about:
“Executive Order
Obama, who has long backed legislation offering young immigrants a pathway to citizenship, announced an executive order forbidding the federal government from initiating the deportation of illegal immigrants under the age of 30 who came to the U.S. before age 16; have lived in the country for at least five years; have no criminal records; and are in school, high school graduates, or military veterans. “
http://www.businessweek.com/news/2012-06-19/obama-immigration-policy-favored-2-to-1-by-likely-voters
The Immigration Ploy
By Thomas Sowell - June 19, 2012
“President Obama’s latest political ploy — granting new “rights” out of thin air, by Executive Order, to illegal immigrants who claim that they were brought into the country when they were children — is all too typical of his short-run approach to the country’s long-run problems.
Whatever the merits or demerits of the Obama immigration policy, his Executive Order is good only as long as he remains president, which may be only a matter of months after this year’s election.”
http://www.realclearpolitics.com/articles/2012/06/19/the_immigration_ploy_114524.html
If Romney is elected President, on his first day in office he can reverse Obama’s policy. Congress is not involved in anyway as you erroneously stated in your original post.