When Regan Sparks was born 23 years ago, she wasn't expected to live beyond her early 40s. But when a "life-changing" drug became available in 2020, the future for those like her with cystic fibrosis (CF) was transformed. For the first time, Regan, of Benfleet, Essex, began to imagine a long life for herself. Her health improved dramatically. She got a job, found a partner, started running, and booked backpacking trips. She dreamed of working in Australia for a year, but the medication that changed her life proved to be the roadblock in making that dream a reality. One of Australia's visa requirements is a limit on how much a potential visitor might cost the community should they need medical treatment. This threshold is currently A$86,000 (£45,700) over the duration of someone's visa. However, Regan's medication, Trikafta, costs A$250,000 (£133,000) a year. The decision to refuse her a visa was "a kick in the teeth", she says. "I've never ever let my CF stop me do anything.…