WASHINGTON, July 29 (UPI) -- Americans should be worried their smartphone use, text messages and Web surfing as well as phone calls, can be logged by Washington, U.S. Sen. Ron Wyden warns.

"The government will not state clearly what the rules are with respect to tracking Americans on their cellphones, and I have asked this repeatedly at public hearings in the Intelligence Committee," the Oregon Democrat and member of the Senate Intelligence Committee told the C-SPAN program "Newsmakers."