NEW : Vice President Biden takes part in an online discussion on gun violence . The vice president is scheduled to speak at the White House Friday afternoon about a new initiative he announced Thursday that will require background checks for all firearm purchases. They also contend that high-capacity ammunition magazines provide the capability for mass shootings such as the Newtown massacre . The NRA says it is `` confident '' Congress wo n't pass Feinstein 's measure . The proposals come almost six weeks after the Newtown school massacre .
NEW : Vice President Biden takes part in an online discussion on gun violence . The vice president is scheduled to speak at the White House Friday afternoon about a new initiative he announced Thursday that will require background checks for all firearm purchases. The NRA says it is `` confident '' Congress wo n't pass Feinstein 's measure . The proposals come almost six weeks after the Newtown school massacre .