His statement comes in connection with the first ever federal conviction for the perpetrator of an anti-trans killing.
Joshua Vallum could be sentenced to life in prison without parole in the 2015 killing of Mercedes Williamson.
In 2009, the U.S. Congress expanded a federal hate crime law to include crimes motivated by a victim's sexual orientation among other factors. Latin Kings rules ban homosexual activity and declare a punishment of death.
Vallum could have been sentenced to another life sentence for his federal crimes, though Guirola gave him 49 years due to his history of being abused as a child. He pleaded guilty to the murder in December, according to the AP.
Vallum pleaded guilty earlier to murder charges in state court.
He struck deadly blows to Williamson's head with a hammer after she tried running away, prosecutors said. 'If I could bring back Mercedes by giving up my life, I would gladly do so'.
The case has been closely watched by LGBT advocates nationwide, who applaud the first use of the Matthew Shepard and James Byrd Jr.
"Today's sentencing reflects the importance of holding individuals accountable when they commit violent acts against transgender individuals", Attorney General Jeff Sessions said.
Sessions, in a statement, said the Justice Department would "vindicate the rights of those individuals who are affected by bias motivated crimes".
"I think this is a day for the LGBT community, their family, and their allies to celebrate that finally, we're getting closer to real justice", said Boyette.
Gordon said her group remains concerned how Trump policies will affect transgender people.
"These actions invite increased discrimination and continued animus against transgender people", Gordon said.
They broke up in 2014 but Vallum chose to kill her in May 2015 because a friend had discovered she was transgender, the Justice Department said.
They described how he lured his girlfriend into a vehicle in Alabama and drove 50 miles to his family home in MS before shocking her with a stun gun.
The roommate also testified that Vallum once told both her and Williamson that his gang would kill the couple if Williamson's transgender status was discovered.
At Monday's hearing, public defenders submitted a sealed brief to Guirola outlining Vallum's troubles.
"Mr. Vallum lived through a childhood that was characterized by abandonment and neglect", said public defender Ellen Allred. 'It's hard to image how a mother could lock a two- or three-year-old child in a room for house on end while adults did drugs'. District Attorney Tony Lawrence said that's what led to the killing.
Vallum acknowledged guilt in the 2015 death of 17-year-old Mercedes Williamson.
He declined to speak with The Associated Press in a March letter, citing advice from his lawyers, and didn't address the issue Monday.
Miller said that despite the alleged threat of death at the hands of her boyfriend's fellow gang members Williamson told her at one point during her relationship with Vallum that 'she didn't have anything to worry about'. He is now serving life in prison on the state murder charge, according to the Sun Herald.