From the Press Release, "WASHINGTON, D.C. - House Homeland Security Committee Chairman Michael McCaul released his July 'Terror Threat Snapshot' today in a continuing effort to highlight the growing threat America, the West, and world face from the Islamic State in Iraq and Syria (ISIS) and other terrorist groups. […] Key takeaways in this month's 'Terror Threat Snapshot' include: (1) With the recent attacks in France and against tourists in Tunisia, ISIS has now been linked to 47 terrorist plots or attacks against the West, including 11 inside the United States. (2) The total number of ISIS arrests in the U.S. has increased five-fold in 2015 with 55 ISIS supporters detained, ten of which have been arrested in the last month. ISIS followers have now been arrested in at least 19 states."
U.S. House of Representatives, Committee on Homeland Security: http://www.homeland.house.gov/