The four states will share intelligence, study gun violence and form a task force to intercept illegal guns.
Governor Andrew Cuomo says the federal response to gun safety has been "absurd".
The consortium will aim to assess gun violence data across disciplines, including criminal justice, public health public policy and social welfare, then use the data to make recommendations for reducing gun violence.
"Let's work across our borders, let's not just advocate for better laws in our own states, but better laws in our region".
"There are people out there who should not have guns", Seeley said.
Last month, Malloy, Murphy and Cuomo announced they were preparing a federal lawsuit over the sweeping tax reform legislation that was enacted by Congress past year on the basis that it treated their states unfairly by limiting the deduction for state and local taxes.
"We're not waiting for federal action". "However, we can not wait for Congress to act". Let's take it to the next step.More news: Winter Weather Advisory Issued For Saturday
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While the governors noted that all four states have some of the more restrictive gun laws in the country, there are proposals to enact additional measures following the recent mass shootings.
Meanwhile, Trump Thursday signaled his strongest support for new gun laws since taking office.
Information on gun purchases, permits, and which guns have been used in crimes will now be able to be shared across four states.
By sharing information, member states can now alert each other when a high-risk individual known to one state attempts or succeeds to purchase a weapon in a neighboring state.
The states will also share the findings of law enforcement agencies about where illegal guns came from and how they are transported to the Northeast. People may be disqualified from owning a firearm for several reasons, including an arrest warrant, order of protection, debilitating mental health condition, or criminal history.
Dannel Malloy and Rhode Island Gov. Gina Raimondo formed the new multi-state partnership to combat gun violence and invited other states from across the nation to join the new effort.
The coalition will allow the states to share information regarding people who are prohibited from purchasing or possessing firearms. The states also are pursuing a Regional Gun Violence Research Consortium.
Raimondo said she will also push legislation in Rhode Island to address laws that allow military-style weapons, that allow high-capacity ammunition magazines and that allow carrying a concealed weapon in schools and government buildings.