The Indiana House has approved a bill that would prevent state agencies from enacting environmental rules tougher than those imposed by the federal government. The House voted 64-33 Tuesday to send the bill to the Senate for consideration. Republican Rep. David Wolkins of Winona Lake says he’s hopeful his bill will get a hearing in that chamber this session. Similar bills Wolkins has sponsored in past years have never received Senate hearings. More than 15 environmental, public health and other groups oppose the legislation, which the House Environmental Rules committee narrowly endorsed last week.