The potential uncertainty over Kneecap’s North American tour comes as one band member, Mo Chara, faces terrorism charges in London over wearing a Hezbollah flag.
Khalil, a 30-year-old Columbia University graduate and permanent US resident, was the first student pro-Palestinian protest leader to be detained by the Trump administration.
US President Trump spoke to the Emir of Qatar Tamim bin Hamad Al Thani before the agreement was reached, a source familiar with details told the Post.
The comments came shortly before US President Donald Trump announced a ceasefire between Israel and Iran.
Significant majorities of Democrats were opposed to bombing Iran further and in favor of ending the conflict immediately.
The US president said that Iran will immediately cease attacks and Israel will join the ceasefire on the 12th hour of the agreement.
The Jerusalem Post reached out to US security and community security bodies to ascertain the threat posed by Iran-sponsored domestic terror in light of US strikes on Iran's nuclear facilities.
Iran had to respond to Sunday's US airstrikes, but Tehran does not want an escalated war that endangers its regime.
Colistin, a last-resort antibiotic, is losing effectiveness due to emergence of mobile resistance genes known as mcr.
The US has previously warned Iran against retaliation and emphasized that it is still interested in a diplomatic solution.