A number of the defendants in the Jan. 6 Capitol insurrection prosecutions have been hedging their bets on having the charges against them dismissed summarily on constitutional grounds, claiming variously that their actions that day were expressions of their First Amendment free-speech rights, or that the “obstruction of Congress” charges brought against them did not fit the parameters of the original law, or that they were being politically persecuted as conservatives because rioters in Portland, Oregon, the previous summer were not similarly charged. Rulings handed down by federal judges in key cases this week have blown these hopes to smithereens....