Is it possible for LHO to have fired a rifle and leave no forensic trace on his clothes?
What type/kind of traces should they have found? I'm completely ignorant on such matters.
Counter question: If he was framed then why not plant evidence of this? The paraffin test taken of his cheek showed no evidence of gunpowder residue. Why did they tell us that if he was being framed? If he was framed - the rifle planted, et cetera - then why not falsify the paraffin test?
In order to prove a negative - something that is difficult to do but not impossible (e.g., I can prove I didn't shoot Lincoln) - one has to ask questions like this. How can one prove he wasn't framed? Well, we can ask: "Why didn't they plant eyewitnesses in the crowd to say they say him shoot JFK?" Or "Why didn't they say the paraffin test on his cheek came back positive?" Remember, he's dead. They can even say he admitted to shooting JFK. But they didn't.