The 35-year-old is widely regarded as one of the best players in tennis history. Two weeks ago, he beat Nick Kyrgios to win his seventh Wimbledon and 21st Major title.
However, his participation at the last Grand Slam of the year is doubtful, as the US requires proof of COVID-19 vaccination for all non-Americans to enter the country. That's something Djokovic doesn't have or intends to acquire.
The US Open has also ruled out seeking an exemption for any player, making Djokovic's participation at Flushing Meadows this year impossible unless the entry rules to the US and the state of New York change.
Kirk finds it bemusing that "millions of unvaccinated illegals" enter the country through the US' southern border while Djokovic can't compete in New York.
"So let me get this straight. The US Gov't will let millions of unvaccinated illegals stream across the border and buy them plane tickets to anywhere they want to go, but they won't let the world's best tennis player come to New York and compete in the US Open? This is a disgrace," Kirk tweeted.
Djokovic is a three-time champion in New York. He made the final last year, losing to Daniil Medvedev. A year earlier, he was disqualified after unintentionally hitting a lineswoman in his fourth round match against Pablo Carreno Busta.
"It is absurd that Novak Djokovic is not allowed to enter the USA for not being vaccinated" - US Senator Marsha Blackburn
Charlie Kirk is not the only one to criticize the US government for not allowing Novak Djokovic to play at Flushing Meadows because of his vaccination status.
US Senator Marsha Blackburn finds it 'absurd' that anybody - much less Djokovic - is 'punished' for not being vaccinated. Blasting US President Joe Biden and his chief medical officer Anthony Fauci for furthering their agenda of a 'forever pandemic', she tweeted:
"It is absurd that Novak Djokovic is not allowed to enter the USA. No one should ever be punished for not being vaccinated, but the left has realised that if COVID is over, they will lose control over Americans' lives. That's why (Joe) Biden and (Anthony) Fauci are pushing for a forever pandemic," Senator Blackburn tweeted.
Djokovic is expected to feature in the Laver Cup for Team Europe at the O2 in London next month. However, under current rules, he cannot play at any of the North American hardcourt tournaments, including the US Open, because of his vaccination status.