• The FBI raided Trump's Mar-a-Lago estate last year and found a cache of classified documents. 
• The investigation into those documents is only one of several legal controversies surrounding Trump.
• Former AG Bill Barr said the classified documents investigation should be the one Trump's "most concerned" about.

Former Attorney General Bill Barr said that of all the legal battles surrounding former President Donald Trump, he should be "most concerned" about the investigation into his mishandling of classified documents. 

—This Week (@ThisWeekABC) April 9, 2023

"He had no claim to those documents, especially the classified documents. They belonged to the government. And so, I think he was jerking the government around," Barr said during an interview on ABC's "This Week" on Sunday.

The FBI seized dozens of classified documents from Trump's Mar-a-Lago estate during a raid last year. 

Barr said he thinks Trump is likely to be indicted in the case. 

"The government is investigating the extent to which games were played and there was obstruction in keeping documents from them," he said. "And I think that's a serious potential case. I think they probably have some very good evidence there."

Barr was Trump's attorney general in 2019 and 2020 but has fallen afoul of the former president since then.