WASHINGTON (AP) -- President Barack Obama is asking a team led by Vice President Joe Biden to offer "concrete proposals" to curb gun violence no later than January, in the aftermath of the horrific massacre at a Connecticut elementary school.

Obama says after he receives recommendations from Biden's group, he will push legislation "without delay." The president is urging Congress to hold votes on the bill.

Obama says the issue is complex but quote, "we have a deep obligation -- all of us -- to try."

Biden, a longtime gun control advocate, will lead a team that will include members of Obama's administration and outside groups.

The move comes after Friday's shooting at Sandy Hook Elementary in Newtown, Conn. Twenty children and six adults were killed at the school by a gunman wielding a semi-automatic rifle.

But some politicians do not agree with the president's approach. Here in Colorado, Rep. Scott Tipton (R-Colo.) believes there will be time to address the issues behind these mass shootings, but that time is not now, when "our nation is mourning the victims who were taken from us just days ago in a terrible tragedy," Tipton's spokesperson said.