http://jpfo.org/articles-assd02/nra-supported-nfa34.htm

".........'First, let’s clear up the matter of NRA’s support of NFA’34:

The NRA supported The National Firearms Act of 1934 which taxes and requires registration of such firearms as machine guns, sawed-off rifles and sawed-off shotguns. … NRA support of Federal gun legislation did not stop with the earlier Dodd bills. It currently backs several Senate and House bills which, through amendment, would put new teeth into the National and Federal Firearms Acts." —American Rifleman, March 1968, P. 22........"