Senior Republican congressman

Steve King: Geert Wilders tweet sparks a social media backlash

"Wilders understands that culture and demographics are our destiny," Mr King wrote on Twitter.

"We can't restore our civilisation with somebody else's babies," he added.

The US Republican Representative of Iowa is a strong advocate of putting a stop to birthright citizenship.

All children born in the US currently get citizenship under the constitution, including the children of families living in America illegally.