Liberal-National MP George Christensen has hit out at the Queensland Parliament after it passed legislation on Thursday which removed the term "sodomy" from its criminal code, while lowering the age of consent for anal sex from 18 to 16, which pulls it in line with vaginal sex.
He said the move would make it easier for 50-year-old men to groom teen boys.
"I appreciate they wanted to standardise the age of consent for all sort of relationships," he told Fairfax.
"But we do know for a fact that there are old men out there who prey on younger men, groom them on the internet and seek to establish sexual relations with them, particularly when they are appear to be questioning their sexuality.
"… I think at 16 years old, when you are questioning your sexuality, when you are going online, when there are predators out there, particularly older men looking for younger boys, this change in the law is fraught with disaster."
The Queensland MP said the scenario was different for women who he claimed wouldn't want to be with older men.
"For fear of being accused of being sexist – let me just say, it would be a great rarity to find a 16-year-old girl who would be willing to sleep with a 50-year-old man," he said.
"Basically, anyone can have sexual relations with a 16-year-old – and I am just speaking in general here and stereotyping I suppose, or generalising … I would think that most 16-year-old girls would find it pretty gross to be thinking about having sexual relations with a 40 or 50-year-old man.
"But we do know there are older men, paedophiles, who are attracted to younger men in particular and I just think that if they were going to lower the age of consent - if we are talking about an 18-year-old and a 16-year-old, two guys in a relationship, I don't have any problem.
"… The difference with what's happened has, is that last week, if a parent found out that their 16-year-old son had been having sex with a 50-year-old man, they could have phoned the police and that 50-year-old could have been done for statutory rape, and I think most people would agree – particularly if there is grooming involved and all the rest of it, that is fair enough.
"This week, now it is different, that person gets a free kick from the government."
PM dismisses Christensen's immigration stance
Malcolm Turnbull has distanced himself from MP George Christensen, who wants to restrict immigration from countries facing problems with terrorism.
The Prime Minister has dismissed an appeal by conservative MP George Christensen to restrict Australia's immigration policy, so as to prevent people to arrive from countries with violent extremism.
Speaking on Melbourne radio station 3AW this morning, Malcolm Turnbull said the country does not discriminate when it came to migrants.
"Our immigration policy is non-discriminatory," he said.
"We are taking a substantial number, some thousands...from the Syrian conflict zone. These are people from oppressed minorities, these are people who have been victims of terrorism."
A day after Pauline Hanson's controversial maiden Senate speech, George Christensen said he was concerned about the rise of "Islamism" in Australia and those willing to commit violence for the religion.
"I think we should consider tighter controls," the Nationals backbencher told federal parliament on Thursday.
"If they don't want to adopt Australian values, why would they come here in the first place," he added.
"There are other countries they would find less offensive, countries where they could enjoy a similar level of oppression and violence which they obviously want."
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Hanson warns of being 'swamped by Muslims'
Malcolm Turnbull also took issue with George Christensen's comments about Muslims, saying they were inflaming the issue rather than resolving it.
"Tagging all Muslims with crimes of a few is fundamentally wrong and also counterproductive," the Prime Minister said.
Mr Christensen called for new laws stripping citizenship from dual citizens if they are convicted of terrorism or become a foreign fighter to go further.
He believes extremists not stopped at the "front door" or allowed through the "backdoor by boat" don't deserve citizenship, adding any sole Australian citizen should lose their citizenship if they have the capacity to become a citizen of another country.
"We need to have this conversation because the alternative is to allow free rein to people who do discuss national security in terms of violence, beheadings and random killings," he said.
His proposed restrictions on immigration is a similar stance to that of Republican United States presidential nominee Donald Trump, who wants to ban immigration from any country that had been compromised by terrorism.