Less than a month after receiving pardons for participating in the Jan. 6, 2021 attack on the Capitol, some former defendants find themselves in a familiar place: back in court, facing other criminal charges. There is Edward Kelley, who was pardoned for assaulting police at the U.S. Capitol, but who is now fighting another case. In November, a jury convicted him of conspiring to murder the Federal Bureau of Investigation agents. Other defendants are similarly arguing they should be absolved of other alleged crimes, such as illegal gun possession and child pornography, discovered during Jan. 6 investigations. At least one...