Donald Trump abandoned his attempt to add a citizenship question to the 2020 US census but will sign an executive order forcing federal agencies to hand over citizenship data to the commerce department. 'As a result of today's executive order we will be able to ensure the 2020 census generates an accurate count of how many citizens, non-citizens and illegal aliens are in the United States of America. We will leave no stone unturned,' the US president said. The attorney general, William Barr, said including a question on the census was not the only way to obtain this 'vital information'