How many Muslims on welfare? Lambie asks

Outspoken senator Jacqui Lambie wants to know how many Muslims are helping protect Australia's borders.

She's also keen to know if any Muslim employees at the Department of Immigration and Border Protection have the authority to reject Christian refugees from coming to Australia.

The Tasmanian, in a series of questions to the government, asked for the number of Muslims getting welfare and what payments they are receiving.

Senator Lambie wrote to the ministers responsible seeking answers in February.

Immigration Minister Peter Dutton, through Michaelia Cash, said his department did not collect data about the faith of its employees.

Social Services Minister Christian Porter also said there was no requirement for welfare recipients to declare their religious beliefs, so the information wasn't available.