Are Catholics Christians?

What is the best response to the statement that Catholics are not Christians? Where does this idea come from?

These links should give you the answers that you need. If you have any further questions or concerns that are not answered by this, please contact Catholic Answers directly.
Recommended Reading:

[LIST]
*]Are Catholics considered Christian?
*]Catholics are not Christians?
[/LIST]

DISCLAIMER: The views and opinions expressed in these forums do not necessarily reflect those of Catholic Answers. For official apologetics resources please visit www.catholic.com.