Former First Lady Michelle Obama was said to be frustrated with the Biden family after they “exiled” Hunter Biden’s ex-wife, Kathleen Buhle, following the pair’s messy divorce, RadarOnline.com can report. In a surprising development to come as former President Barack Obama continues to stump for President Joe Biden on the 2024 campaign trail, it was revealed that Michelle has “privately expressed frustration” with how the Bidens treated Buhle after she and Hunter split in 2017. Even more surprising was the claim that Michelle has refused to campaign for President Biden in large part due to the…