Actually i think the Sec is manipulating the crypto market since month/years, as specially garry ganssler is abusing his power. The SEC should protect investors, but actually they just deal more and more damage to us. So Is it possible to sue the SEC somehow? 
Sure, you can sue the SEC. Is that something anyone should ever want to do though? Unless you're facing dire circumstances like the end of your business, or your livelihood being completely stripped from you, I couldn't see any reason why a sane person would ever want to be in a lawsuit with the government. The rules apply to you, not them. They have endless amounts of your money to spend to beat you. Unless you have an iron clad case and get lucky with the judge and jury, you'd have no chance of winning even if you are in the right. It's best to avoid the government at all costs in my opinion.