It wasn't like Clint was completely out of place either. Parking Tony's car in the 'visiting asset' area, taking the stairwell to the lobby and using his access card to get them in, Clint just nodded for Steve to follow along.
They passed Claire on the main desk, Clint giving her a wave before he led Steve around to the elevators, punching the 'up' button and waiting. When the cart arrived, they both stepped in and Clint hit the button for the 6th floor, which was technically for the SWORD operating agents while the eval was going on, but they had plenty of computer terminals and minimal security.
"So, I guess I gotta ask," while they were ascending in the elevator was likely the best time to do it, "y'know, since we're here and all." And Clint was technically the one who would be on record as having accessed this stuff. "What exactly are you intending on doing with the information you get?"