This is why the Obama administration ignored the law, which required the mandate to go into effect for all employers on January 1, 2014. Hoping to avoid the wrath of the voters in that year’s midterms a group of congressional Democrats went to the White House and persuaded the President to delay its implementation. Thus, the enforcement date was pushed back to January of 2015. Six months later, he arbitrarily moved back the implementation date for employers with 50 to 99 workers until this year.This "selective enforcement" of the written law - with specific implementation dates - was illegal. The Executive branch does not exist to write or interpret legislation: it exists to enforce laws. In this case, Obama delayed implementation of his own namesake law for purely political reasons (which didn't help anyway.)
Now I'm no gun nut but as Ace points out, the current law is very specific about who is and is not required to perform a background check for a gun purchase:
(21) The term “engaged in the business” means--I understand that Obama is going to do a town hall meeting on gun control where he can stroke his ego as being the only person in the room who cares about the kids. He'll have a plant in the audience to throw him some softballs but nobody will ask the former Constitutional Law professor if there's any limit to bending the English language to fit his agenda.
(C) as applied to a dealer in firearms, as defined in section 921(a)(11)(A), a person who devotes time, attention, and labor to dealing in firearms as a regular course of trade or business with the principal objective of livelihood and profit through the repetitive purchase and resale of firearms, but such term shall not include a person who makes occasional sales, exchanges, or purchases of firearms for the enhancement of a personal collection or for a hobby, or who sells all or part of his personal collection of firearms;
And I didn't even mention illegal immigration.