His parents have been fighting the London hospital where he has been since September for permission to bring him to the United States for treatment so experimental it has not even been tried on mice.
Charlie's father Chris yelled across the court room at a barrister, demanding: When are you going to start telling the truth?
Mr Justice Francis disagreed: "I did my job".
CHARLIE Gard's fight for life has gone global, but British judges are expected to make a final decision over his future tomorrow.
Francis who ruled on the original case in April said he would be delighted to change his mind but added "I want evidence of something that's different".
"I have to decide this case not on the basis of tweets, not on the basis of what might be said in the press, or to the press", judge Nicholas Francis said on Monday.
House Republicans are stepping in to help the parents of Charlie Gard, the critically ill British child at the center of an worldwide debate over whether the government can make life and death decisions.
His mother Connie Yates and father Chris Gard said they are determined to continue their fight for their son to have nucleoside therapy, which is available overseas.
She said that if the medication works Charlie could potentially be a normal boy again. They said he was diagnosed with mitochondrial depletion syndrome when he was 9 months old.
Katie Gollop QC, who led Great Ormond Street's legal team, suggested that further treatment would leave Charlie in a "condition of existence".
Dr Trevor Stammers, lecturer in bioethics and medical law at St Mary's University, told Sky News the Vatican's evidence has to prove the experimental treatment has some chance of conferring benefit. Yates said "this is really hard" as Great Ormond Street's lawyer Katie Gollop was speaking.
The parents' appeals to prevent the removal of Charlie's life support failed in both the U.K. Supreme Court and the European Court of Human Rights.
Meanwhile, Conservative Woman writer Caroline Farrow said the claims of Charlie's parents are not fundamentally outrageous or unreasonable.
Sky said she had supported the family's protests in London. In this case, the wishes of the parents ought to be respected.
Charlie has an extremely rare condition and doctors say he has irreversible brain damage Is Charlie in pain? Maxwell Smith, who lives in the United Kingdom with his parents, was diagnosed with mitochondrial depletion when he was only several months old, but at the age of five, he is alive thanks to nucleoside bypass treatment.
"As for the Pope, no one can accuse him of showing support for publicity".
The hearing continues on Thursday.