We get that America is a lawsuit nation. So many people love to sue so many other people. But, why would the House vote to sue the President over enforcement of a law that the batshade party has already tried to repeal 50 times - and even then, a portion of the law that they wanted delayed in the first place - at a time when they literally cannot accomplish anything else as a governing body? The longer and latest answers, both historical and comical, may potentially be found in those links, sure.
But the realest, bestest, shortest version of this BATSHADE lawsuit is this: these bag o' nuts are bat-f**king insane! Full stop. The end. Sorry, Mr. President, wish it weren't always this way, but haters gonna hate.