I know there is a lot of sentiment in favor of Paige spending the rest of her life in prison, or even being executed. But, realistically, how is that going to happen? The government needs evidence sufficient to prove her guilt, beyond a reasonable doubt. It's certainly possible that, if apprehended, Paige would simply confess. She's so clueless, she probably wouldn't even ask for a lawyer. And she couldn't stand up to even the mildest of questioning. But if that doesn't happen, I'm not sure where the government would get the evidence to convict her. Very few people know of her involvement in espionage. Philip and Elizabeth may be dead, fugitives, or back in Russia. If they're caught, they aren't going to give up Paige. Claudia is likely in the wind or back in Moscow. Marilyn is dead. There are some random unnamed operatives seen helping with surveillance, but their knowledge is probably limited to what they need to know. Pastor Tim knows Paige knew her parents were spies, but he doesn't know of her involvement in espionage, which occurred after he left the country. So, Paige has a good chance of walking if she keeps her mouth shut.
My vision for the end of the series: Philip or Elizabeth or both of them (depending on who survives) in a drab Moscow apartment in 1991, watching television coverage of the end of the Soviet Union.