President Obama sat down with several police chiefs today at a gun violence summit in Washington D.C.

Among those attending was Chicago’s top cop Garry McCarthy and the head of the police department in Newtown, Connecticut.

The president is looking for support for measures to curb gun violence including an  assault weapons ban and a ten round limit on ammunition.

Police chiefs from Oak Creek, Wisconsin and Aurora, Colorado, where other mass shootings occurred, also attended.

A senate committee will consider policies on Wednesday.

The National Rifle Association has vowed to block them.