I'm not able to replicate the issue. Can you try Firefox in Safe Mode? https://support.mozilla.org/en-US/kb/diagnose-firefox-issues-using-troubleshoot-mode#w_how-to-start-firefox-in-4troubleshoot-modesf5safe-modesf

https://egov.uscis.gov/processing-times/

When on that page, try clicking the link: Under "Case management tools" One of them states:

 Inquire about a case outside normal processing time

That link will not open. Some of the links will open but many will not (Not necessarily all on this page)

Works for me. see screenshot Did you try Firefox in Safe Mode?

You used the one that works. That link always works. Try the one I said and show me a screen shot please.

I clicked random links at that location and now issues. So what exactly is your the issue your having? No screenshot can be provided as clicking on the link goes directly to the link site. So you need to provide the error screenshot from your side as I have no issue clicking the links.

You used the one that works. That link always works. Try the one I said and show me a screen shot please.

Here ya go...

Well, it won't work for me. Should I clear my cache or change some setting? Under settings it states: "Your stored cookies, site data, and cache are currently using 1.5 GB of disk space."

Yes, clear your cache and also try safe mode. https://support.mozilla.org/en-US/kb/diagnose-firefox-issues-using-troubleshoot-mode#w_how-to-start-firefox-in-4troubleshoot-modesf5safe-modesf

What security software are you running?