The News of the World can reveal that Kenya-based Samson Obama tried to get into Britain on his way to Washington for his family's big day, the historic inauguration in January.
Eagle-eyed immigration officials at East Midlands Airport, using the latest biometric tests, discovered he was linked to an incident here last November.
The NOTW article continues:
Details on the hi-tech database revealed that Samson-who manages a mobile phone shop just outside Nairobi -was in fact the same man who was arrested by police in Berkshire after he approached a group of young girls, including a 13 year-old, and allegedly tried to sexually assault one of them.
He then followed them into a cafe where he became aggressive and was asked to leave by the owner.
That's when police were called to the scene and Samson was arrested.
But he gave officers a false ID - claiming to be Henry Aloo, a genuine refugee and asylum seeker - and supplied his mother's address in Bracknell.
Mum Kezia, 67, has lived in the town for six years. She married the US president's father Barack Obama Senior in Kenya when she was a teenager.
Will this story appear in the US media? Probably not. All of the news outlets in this country are too busy telling us about how Sarah Palin has a problem family.
More of the story with photos here.