The PRESIDENT (12:01): I inform the Senate of the resignation of Senator Collins, on 15 February, and Senator Leyonhjelm, on 1 March, as senators for the states of Victoria and New South Wales respectively. I welcome back Senator Collins to the chamber. I table relevant correspondence. I also remind the Senate that, on 21 January, Senator Bushby resigned his place as a senator for the state of Tasmania. I table certificates of appointments and choice, received from the governors of Tasmania, Victoria and New South Wales, of Wendy Anne Askew, Raffaele Ciccone and Duncan Spender.