Trump frees drug offender on life sentence after Kim Kardashian visit

US President Donald Trump has commuted the life sentence of Alice Marie Johnson, who has served more than 20 years in prison on a first-time drug offence, and is prepared to use his constitutional clemency powers to give relief to dozens more offenders, a White House source says.

Johnson's cause had been taken up by celebrity Kim Kardashian West, who personally lobbied Mr Trump on her behalf last week.

Johnson, a 63-year-old from Tennessee, has already served more than 20 years in prison on drug conspiracy and money laundering charges. In a statement on the commutation of her sentence on Wednesday, White House press secretary Sarah Sanders said she "has been a model prisoner over the past two decades".

Ms Sanders noted that while "this administration will always be very tough on crime, it believes that those who have paid their debt to society and worked hard to better themselves while in prison deserve a second chance".

A White House official familiar with the clemency process said Mr Trump continues to examine the cases of people who he believes have been victims of the criminal justice system.

Mr Trump last week pardoned conservative commentator and filmmaker Dinesh D'Souza, convicted of making illegal campaign contributions, and has recently granted pardons to the late heavyweight boxer Jack Johnson, controversial former Arizona Sheriff Joe Arpaio, and Lewis "Scooter" Libby, a former top aide to then-vice president Dick Cheney.

The President is still considering pardoning lifestyle maven Martha Stewart, who was convicted in an insider trading case, and commuting the sentence of former Illinois governor Rod Blagojevich, currently serving a 14-year prison sentence on felony corruption charges, along with several others, the White House official told Reuters.

Stewart and Blagojevich both have ties to Mr Trump's former Apprentice TV shows, but the White House has denied that Mr Trump is only considering pardons for well-known figures and that he is examining several other cases that are less notorious.

"He's looking at all those seriously," Hogan Gidley, a White House spokesman, told reporters last week. "He takes them seriously because they impact people's lives."