Barack Obama has worked in universities in New England and Chicago, bridging the freshwater - saltwater divide. In the midwest, he speaks of his mother's Kansas upbringing; when addressing troops, he refers to his grandfather Stanley who fought in WW2; in West Asia and North Africa, he mentions his Muslim father. His childhood years in Indonesia allow him to feel at home in South East Asia; in sub-Saharan Africa, his Kenyan half is prominent; and now, in Japan and China, he has used his time in Hawaii to label himself the first Pacific President of the United States.
Nothing connects President Obama to India, as far as I know, apart from the picture of Mahatma Gandhi he keeps in his office. When he visits this country, though, I suspect he will reveal some biographical detail that will encourage us to claim him as an honorary Indian.