A newly released court order(happened May 2017) from the Foreign Intelligence Surveillance Court (FISA) found that the National Security Agency, under former President Obama, routinely violated American privacy protections while scouring through overseas intercepts and failed to disclose the extent of the problems until the final days before Donald Trump was elected president last fall. In describing the violations, the FISA court said the illegal searches conducted by the NSA under Obama were "widespread" and created a "very serious Fourth Amendment issue."
These new discoveries come from a recently unsealed FISA court document dated April 26, 2017 and center around a hearing dated October 26, 2017, just days before the 2016 election, in which the FISA court apparently learned for the first time of "widespread" and illegal spying on American citizens by the NSA under the Obama administration.