Former immigration deputy secretary Abul Rizvi accused Liberal frontbencher Andrew Hastie of "dog-whistling" after he suggested that high immigration has made Australians feel like "strangers in their own homes", with politicians likening the statement to a controversial speech made by a white supremacist.

Mr Hastie, who is the opposition home affairs spokesman, has escalated his presence on social media over recent weeks to platform his views on net zero, housing, manufacturing and migration, stoking a flurry of speculation about his ambitions for leadership, which he later played down as "mischievous" .

In his latest post, the senior Liberal urged his Coalition colleagues to push for tougher immigration policies or else risk "dying as a political movement" and called to slash net o

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