By Caroline Valetkevitch NEW YORK (Reuters) – U.S. stocks declined on Monday as investors worried about the impact of more interest rate hikes and pulled out of technology shares and chipmakers after the United States announced restrictions aimed at hobbling China’s semiconductor industry. Federal Reserve Vice Chair Lael Brainard said tighter U.S. monetary policy has begun to be felt in an economy that may be slowing faster than expected, but the full brunt of Fed interest rate increases still won’t be apparent for months. Despite growing concerns by a number of economists and analysts that th…