TUNIS (Reuters) – The United States raised concerns over Tunisia’s democracy on Thursday after President Kais Saied introduced a new constitution giving himself far more powers, but the broad reaction among Western democracies was muted. The new constitution was endorsed in a referendum the president held on Monday, a year after Saied moved to shut down the elected parliament and start ruling by decree. “Tunisia has experienced an alarming erosion of democratic norms over the past year and reversed many of the Tunisian people’s hard-won gains since 2011,” U.S. Secretary of State Antony Blinken…