Tuesday marks nine years since the Sandy Hook school shooting but there is still little agreement on preventing school violence – causing frustration for gun control groups.

"There has been too little action," said Sen. Richard Blumenthal.

Connecticut has approved sweeping gun control laws, but Congress has not.

"Movements take time to build and achieve ultimate victory," said Sen. Chris Murphy.

But even in Connecticut, demand for guns is spiking. In 2019, state police issued 13,000 new permits. So far this year, that number is 44,000.

"The legislation here in Connecticut is not solving our problems," said Holly Sullivan president of Connecticut Citizen's Defense League. "Funding for mental health has not been done. The state of Connecticut has yet to do that critically important piece of this bill. And No. 2, the school safety plans."

Groups working on the ground to prevent violence remain grossly underfunded. Nearly a decade after Sandy Hook, solutions remain complicated and elusive.

President Joe Biden's massive Build Back Better plan includes $5 billion for anti-violence groups, but that plan is stalled in Congress.