I had a little extra time to check this out. On the Federal level there is no limitation on child trafficking, etc. States each set their own limitations, seems some limit at 5 years, others 10 years, it varies. It seems that Federal charges could be brought in many of these cases, but it's important to remember that the burden of proof is much different in courts of law than what Hollywood presents. To our eyes, this may appear to be open and shut cases, courts don't see it the same way.
While these things are very serious offenses, Epstein was involved in much more, for example, in the recent document dump it looks like Epstein and Bill Gates were in on the pandemic scandal and conspiring. Millions dead, or thousands trafficked, which will any administration prosecute? My money is on neither. Like this meme has listed, no administration dealt with this, it's not just a "Trump" issue.