Australian musician Keli Holiday has been forced to cut his tour short after being denied entry in the US – with his incident at the border being followed by an apology from his girlfriend over an old social media post about Donald Trump . Holiday, who performs solo and as one half of the electronic duo Peking Duk, said he was “detained” at the border while trying to travel from Canada back into the States for a concert in New York. He said in a post on social media on Tuesday (11 May): “Unfortunately I’m not going to make it to tonight’s show at Baby’s All Right in NYC. “I have spent all day detained at the Canadian border and denied entry back into the U.S. despite having the proper visa documentation in place. “I’m still trying to get clarity on the situation myself.” Holiday has returned to Australia following the incident (Getty) The musician had already performed a date in Los Angeles before travelling to Toronto for a gig on Wednesday 6 May.…