"Even marginal increases in handgun prevalence may be impactful," researchers said.
The timing of the interview came as the Trump administration continues to roll back Obama-era environmental regulations.
Presidents get about $200,000 per year after they leave office, and unlimited work expenses. Many earn millions in speaking fees and book deals.
The president himself reported no debt to the IRS, but has steadfastly refused to release his personal tax returns.
The amendment would allow lawmakers and their staff to sidestep insurance that discriminates against their pre-existing conditions
Obama's tearful final farewell ended with a resounding "Yes we can. Yes we did. Yes we can."
Obama should present a blueprint for what a two-state solution should look like.
Tom Hanks, Robert De Niro, Bruce Springsteen and Diana Ross also received the Presidential Medal of Freedom.
Both Barack Obama and Hillary Clinton are inspired by the women in their lives.