US President Donald Trump said on Monday that he is building a granite helipad on the White House lawn, insisting that the landing area is needed to accommodate new, more powerful presidential choppers. Confirmation of the project came as construction crews had already begun working on the helipad on the South Lawn, where the president had UFC build a temporary arena for a cage fight celebrating his 80th birthday. He said the project would be privately funded and estimated its cost at up to US$6