From NewsMax (link):
In a sharp break with official U.S. policy towards the two Chinas, Sen. Dianne Feinstein announced on Thursday that America is under no obligation to defend Taiwan if the tiny island democracy is attacked by Communist China.
“It is important to point out a common misconception,” Feinstein told a gathering of Chinese-American business leaders in San Francisco, in quotes picked up by the San Jose Mercury News.
“Nowhere does the [Taiwan Relations Act] explicitly require the U.S. to go to war with the mainland over Taiwan,” she insisted.
See also Taipei Times’ “Senator warns that US is not obliged to help defend Taiwan” and San Francisco Chronicle’s “Feinstein rips Taiwan while urging Chinas to cooperate”