Even the ACLU knows “Universal Background Checks” violate the Constitution. http://dailycaller.com/2013/04/04/exclusive-aclu-says-reids-gun-legislation-could-threaten-privacy-rights-civil-liberties/
There’s no penalty when the Federal Government violates the Constitution. None. The remedy is to reverse the offense. Another possible remedy is to get an injunction, a tactic the ACLU has used. An injunction prevents further action. An injunction does not guaantee government will cease and desist.
Bottom Line? Government will do as it pleases until and unless there is sufficient push-back. On Universal Background checks it looks like they will be passed. That’s bad for Liberty.