Alas, Senator elect Tom Cotton (R-AR) does not consider the Do Something Disease which often affects those in Cocktail Party in the District of Calamity. Namely, it is better to look good than feel good. The P.R. about passing more legislation is thought to be better to political hacks than actually solving a problem.
In our Constitutional Republic, enforcement of the laws falls upon the Executive Branch. Unfortunately, the Obama Administration and its Justice Department under Attorney General Eric Holder have made a practice about ignoring laws which they do not like (such as DOMA, Drug Laws or Gun Law) or contorting law enforcement to effectuate policy goals (e.g. immigration)