Liberals have whole cities and states ignoring federal immigration law by saying we won't check your legal status in the country, and if you're arrested, we won't report you to DHS/INS you unless it is something drastic like murder.
Liberals are ignoring federal drug laws and passing city and state laws on recreational and medical marijuana.
Since liberals have been able to ignore both federal drug laws and immigration laws on a massive scale, immigration laws ignored for twenty years, they have given conservatives an example to follow in having states like Texas and Oklahoma say we will ignore any new gun control laws. After all, liberal states are ignoring other laws en masse.
And the conservatives have a stronger basis for it, because the right to own a gun as a citizen so you can be called up for civil defense or use it for self defense is part of the Second Amendment. In contrast, drug and immigration laws are more distantly derived from the Constitution.