New Delhi, Jan 25 (ANI): US President Barack Obama paid floral tributes at Raj Ghat, the memorial of Father of Nation Mahatma Gandhi in New Delhi on Sunday. Obama was accompanied by Power Minister Piyush Goyal, who is Barack Obama's minister-in-waiting. Obama also planted a sapling at Rajghat. President Obama, who is the chief guest of this year's Republic Day parade, will be the first US president to attend the Republic Day celebrations.