"Can't the government just require all ISPs (including VPNs) to perform man-in-the-middle interception on all secure traffic?"
How does that help? All that allows is access to private and secure data.
Would you appreciate some wanker intercepting the traffic between your site and Amazon when making a purchase? Or would you appreciate it if someone was spying on your comunications between you and some random woman you met on Match.com?
Liberty is something to be fought for, not to have concessions made on.