Ahead of Donald Trump's new comments that President Obama was born in the US [1] despite years of promoting the birther conspiracy, Bernie Sanders sent two poignant tweets. The former Democratic nominee pointed out how no one asked him whether he was born in the US despite the fact that his father was born in Poland. (Many birthers claimed Obama was born in Kenya because that's where his father was from.)

My dad was born in Poland. Do you know how many people ever asked me whether or not I was born in America? Nobody ever asked me that.

— Bernie Sanders (@SenSanders) September 16, 2016 [2]

Maybe it has something to do with the color of my skin.

— Bernie Sanders (@SenSanders) September 16, 2016 [3]

Sanders's tweets alluded to the idea that Trump never questioned his birthplace because he is white and only went after Obama because he is black. Indeed, many people, including former Secretary of State Colin Powell, have called the birther movement racist [4].