"Firearm injuries are one of the top three causes of death among youth, and studies show that strong gun laws help significantly reduce injuries, suicides and homicides."
The visit comes two weeks after gun-rights advocates scuttled a Senate bill that would have expanded background checks.
A new Gallup survey found that about two-thirds of Americans supported the legislation. Some lawmakers have suggested that it may come up again before the end of the year.
In addition to gun control measures, federal research on gun violence has been a major issue for pediatricians since it was blocked by Congress in the 1990s.
Earlier this year, President Obama directed the Centers for Disease Control (CDC) to resume its studies on the topic following the deadly mass shooting in Newtown, Conn.
Opponents say public-health research on gun violence is politically motivated and intended to curb gun rights.
The AAP represents 60,000 pediatricians.
In Washington, the group will hear from Rep. Elijah Cummings (D-Md.); Cindy Mann, deputy administrator of the Centers for Medicare and Medicaid Services; and Kevin Concannon, under secretary for Food, Nutrition and Consumer Services with the Department of Agriculture.