WASHINGTON — The Supreme Court refused on Monday to hear a Second Amendment challenge to a Connecticut law banning many semiautomatic rifles. The law, enacted in 2013 in the wake of the mass shooting at Sandy Hook Elementary School in Newtown, Conn., made it a crime to sell or possess the firearms, which critics call assault weapons.

The decision not to hear the case, not long after the mass shooting in Orlando, Fla., does not set a Supreme Court precedent. But it is part of a trend in which the justices have given at least tacit approval to broad gun-control laws in states and localities that choose to enact them.