RT [@CNNValentine](https://twitter.com/CNNValentine/status/1351979796620857349) As @brikeilarcnn noted over pictures of Arlington –

Biden believes his son Beau’s fatal cancer was caused by toxic burn pit exposure, during his time in the National Guard.

Burn pits are an issue that the VA – under Trump – did not want to talk about.

https://t.co/ubZXTRgcJ6