Key insight: Sen. Chuck Grassley urged President Donald Trump to force federal agencies to declassify documents, raising the stakes in his yearslong pressure campaign against UBS and predecessor bank Credit Suisse. Sen. Chuck Grassley urged President Donald Trump to force federal agencies to declassify documents, raising the stakes in his yearslong pressure campaign against UBS and predecessor bank Credit Suisse. Spokespeople for the White House and UBS, which acquired Credit Suisse a few years ago, did not immediately respond to requests for comment. UBS took over the investigation when it acquired Credit Suisse in an emergency, government-brokered deal. More recently, Barofsky and UBS have been at odds over certain documents that UBS has withheld from him, citing attorney-client privilege.