A lot of rights (like your right to remain silent, your right to a speedy trial, your right to bear arms, your right to vote, your rights to be free from search without reason) have been interpreted only apply up to the point of conviction. So yes, things get MUCH tougher once convicted as many rights no longer apply to you or are stripped from you.
In this case, up until conviction you are presumed innocent and guilt must be proven. Post conviction most of the appeals process is bared if not filed within 14 days of conviction (it used to be forever but then the US Justice system decided woohhh there that's too long and burdensome on the Justice system so 14 days was deemed a reasonable change to the previous 'forever'. A totally reasonable happy middle). After 14 days from conviction really the only relief available is to prove actual innocence, a much higher and more difficult standard to meet.
So falsify and/or misrepresent evidence just long enough to fool a jury. If the ruse is discovered one minute after conviction, who cares? Person's convicted now, doesn't matter?
With the caveat that this is coming from someone with zero training in law: what a load of horseshit.
No, people have 14 days not one minute (previously forever but reduced to 14 days to find a happy balance to ease the load on the judicial system) after conviction in the Feds to file what most Americans' think of when they think of an appeal. After 14 days (previously forever) the appeal process is greatly limited.
In this case, up until conviction you are presumed innocent and guilt must be proven. Post conviction most of the appeals process is bared if not filed within 14 days of conviction (it used to be forever but then the US Justice system decided woohhh there that's too long and burdensome on the Justice system so 14 days was deemed a reasonable change to the previous 'forever'. A totally reasonable happy middle). After 14 days from conviction really the only relief available is to prove actual innocence, a much higher and more difficult standard to meet.