Not sure he is that interested in stopping them.
Check it out:

South Carolina GOP Sen. Lindsey Graham sounded the alarm Sunday about the growing threat of Islamic State launching an attack on American soil unless President Obama takes more decisive action to stop the terror group’s surge across Iraq and Syria.

Graham, a member of the Senate Armed Services Committee, told “Fox News Sunday” that the well-funded, swiftly-strengthening organization, which has taken control of large parts of both Middle East countries, is a “direct threat to our homeland.”

“Mr. President, be honest with the threat we face,” Graham said. “They are coming.”