Volkswagen’s (VOWG_p.DE) top U.S. executive will tell a panel of U.S. lawmakers on Thursday that he knew as long ago as the spring of 2014 that the German carmaker might be breaking rules on U.S. diesel emissions tests. In written testimony submitted to a congressional oversight panel a day ahead of Thursday’s hearing, President and CEO of Volkswagen Group of America Michael Horn said: “In the spring of 2014 … I was told that there was a possible emissions non-compliance that could be remedied. Almost three weeks after it admitted publicly to rigging U.S.