Tread carefully here and don't assume he's claiming that his uncle (black or white) was a liberator.
His claims that solar is a viable main power source is much more attackable. The amount of convertible solar power, averaged over the entire US for a whole year, day-night, comes out to 7 Watts per square foot. Solar power advocates use the summer sun in Arizona at noon without considering atmosphere or solar panel conversion efficiencies and get 141 Watts per square foot.
Solar has received huge subsidies for decades, second only to wind power, and we have little to show for it.
There were no American troops in Soviet-occupied Poland in 1945. Auschwitz became a NKVD prison camp. Obama made a preposterous claim and it is easy to prove that he lies. Just ask any military historian.
His mom was an only child. His dad was a Kenyan arab.
Who is the Uncle?