conspiracy theories like that the bureau is tampering with climate data to "perpetuate global warming hysteria", as part of a "global warming agenda". He has been viewed as a "right wing climate denialist" by the ALP, and was singled out by ALP leader Anthony Albanese as someone "who thinks the Bureau of Meteorology is part of global conspiracy". Groups that have also expressed that opinion include the Greens, the media, and some within the scientific community. Senator Murray Watt called Rennick's BOM allegations "nuts", adding that such allegations were sourced "from right-wing think tanks". Rennick said his view was based on his experience in accounting; he had not sought a briefing with the Bureau over his concerns. Rennick proposed that the Kyoto carryover carbon credits should be used to support Australia's 2030 emissions target. Australia has been the only country in the world to attempt to use those credits, and was widely criticised for attempting to do so. Rennick claimed that without anthropogenic carbon emissions, phytoplankton would absorb so much carbon from the atmosphere that it would "destroy our plant life", a hypothesis contradicted by the Earth's past history. COVID-19 In 2021, The Guardian reported that federal health minister Greg Hunt had described some of Rennick's Facebook posts as containing "false information". While the Guardian did not disclose what the posts said, it described them as "casting doubt over the accuracy of PCR tests", and said that he "questioned why Australia's Therapeutic Goods Administration (TGA) had not yet recommended use of ivermectin". In November 2021, Rennick was one of five Liberal-aligned senators who voted against the government in support of One Nation's COVID‑19 Vaccination Status (Prevention of Discrimination) Bill 2021. In December 2021, Rennick's claims that Covid-19 vaccines amounted to "experimenting" on children and his anti vaccine posts on Facebook were rebutted by multiple health officials. The Chief Medical Officer of Australia, Dr Paul Kelly, said that the Pfizer vaccine is “worthwhile, safe and effective” for children aged five to 11. Head of the TGA, John Skerritt said “I reject the assertion that it’s nothing much for kids and doesn’t matter if they catch [Covid].” The Australian Medical Association vice-president, Chris Moy, told Guardian Australia that Rennick’s surveys of adverse events were “as far away from science as possible” because they “force one answer he wants”. In February 2022, Rennick attended the Convoy to Canberra protests. Superannuation On 13 November