Donald Trump Jr Is Having A Go At Australia's Labor Party For 'Insanity'

US president Donald Trump's son says the Labor Party has tried to "silence conservatives" by trying to keep activist Raheem Kassam out of the country.

Labor has taken issue with former Breitbart editor-in-chief Kassam coming to Australia for a conference next week.

"We have Big Tech constantly trying to silence conservatives and now one of the major political parties in Australia is trying to silence Raheem Kassam because of his conservative views," Donald Trump Jr tweeted.

"The insanity needs to stop!"

Kassam is listed as a speaker at the Conservative Political Action Conference -- CPAC -- in Sydney next weekend.

Labor has called on the Morrison government to deny Kassam a visa after he called the Koran "fundamentally evil".

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Kassam also tweeted that Scottish National Party leader Nicola Sturgeon should have her legs taped shut "so she can't reproduce".

Opposition home affairs spokeswoman Kristina Keneally took the Trump tweet in her stride, rattling off other right-wing figures the Morrison government has blocked from entering Australia.

Photo: AAP

"Mr Trump, please know that Scott Morrison's government banned Milo Yiannopoulos from entering the country in March, David Icke in February, and Gavin McInnes in November last year," she tweeted.

Senator Keneally also pointed out the government's leader in the upper house, Mathias Cormann, had described Kassam's comments as "disgraceful, highly objectionable and completely outrageous".

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Labor has also questioned the character of other speakers, including US congressmen Mark Meadows and Matt Gaetz.

UK Brexit Party leader Nigel Farage also is listed as a CPAC speaker, while Australian speakers include former prime minister Tony Abbott, Liberal Senator Amanda and Liberal MP Craig Kelly.