If you're lying to a government agency, that's almost certainly breaking some law. I suspect that Illinois's §31-4 applies here (assuming this were in Illinois):
(a) A person obstructs justice when, with intent to prevent the apprehension or obstruct the prosecution or defense of any person, he or she knowingly commits any of the following acts:
(1) Destroys, alters, conceals or disguises physical evidence, plants false evidence, furnishes false information
(I'm not sure if the "prevent the apprehension or obstruct the prosecution or defense" would apply case, but I'm not about to try traipsing through Illinois law decisions to find precedence).
If they knew that these agents were investigating possible mis-behavior or law-breaking on the part of Uber then Uber (and the people who coded up this cute little internal service) are now involved in a conspiracy. The neat thing about conspiracy is that it is much easier to prove/convict than the actual criminal activity.
(a) A person obstructs justice when, with intent to prevent the apprehension or obstruct the prosecution or defense of any person, he or she knowingly commits any of the following acts:
(1) Destroys, alters, conceals or disguises physical evidence, plants false evidence, furnishes false information
(I'm not sure if the "prevent the apprehension or obstruct the prosecution or defense" would apply case, but I'm not about to try traipsing through Illinois law decisions to find precedence).