More to the point, can Obama be dragged into this while serving in office, according to the courts? Remember, it depends on what 'is' is...
In his person? Possibly not, but his records can certainly be ordered up by the Court, if they feel the need to do so.
Remember, Clinton was compelled to testify about a matter which occurred before he became President. He lied under oath, and was impeached. Wimpy Senate would not look at the evidence and failed to convict an remove. The matter, while serious, pales in comparision to usurping the office of President.