A series of well-timed trades in shares of student loan giant Navient Corp. before theLabor Day weekend, following which a critical Trump administrationpolicy shift came to light, spurred the AFL-CIO to ask regulatorsto review what the labor federation called potential insidertrading.

The organization on Tuesday urged the U.S. Securities andExchange Commission “to examine the trading in Navient’scommon stock on Aug. 31,” according to a copy of the requestobtained by Bloomberg News. The trades occurred before aletter to the Consumer Financial Protection Bureau revealingthe Education Department rule change was publicly released.

The CFPB, created in the aftermath of the financialcrisis, had pledged to supervise student loan contractors anddevelop new rules governing their conduct. Richard Cordray, theCFPB’s director, has been the frequent target of Republican ire,with his agency targeted by some in Congress forelimination. In January, the regulator sued Navient, accusingit of “systematically” cheating student debtors by taking shortcutsto minimize its own costs. Navient has consistently deniedwrongdoing.