WATCH: Reagan addresses NRA in 1983: 'Gun don't make criminals'
President Ronald Reagan appeared before the powerful gun-rights lobbying group at an event in Phoenix, Arizona.
The Note: Trump marks a milestone
Trump is one day away from marking his 100th day in office.
WATCH: Most notable moments of Trump's first 100 days in office
ABC News' political analyst Matthew Dowd analyzes the highs and lows as Trump prepares to hit the 100-day mark and what Trump needs to do moving...
On Michael Flynn, Attorney General Sessions says vetting can't 'catch everything'
Attorney General Jeff Sessions said the vetting process to clear Cabinet appointments can't be expected to "catch everything."
WATCH: US attorney general speaks out on Michael Flynn investigation
Jeff Sessions discusses whether the Justice Department is investigating Trump's former national security adviser and if he would recuse himself...
WATCH: Trump to make historic appearance at NRA meeting
Trump will appear at the NRA's annual meeting as his administration faces new questions about Michael Flynn, Trump's former national security...
WATCH: Congress battles over health care as shutdown looms
Congressional Democrats have told the GOP leadership that if they push for a vote on health care, Democrats will not support a short-term spending...
Trump won't see health care vote in first 100 days
House Republicans announced they did not have the votes to pass a new bill.
ANALYSIS: Facts and figures behind 99 days of President Trump's tweets
The president has tweeted 467 times since Inauguration Day.
WATCH: Trump: There is 'absolutely' a chance of 'major, major conflict' with North Korea
The president's comments come ahead of his 100th day in office.
Where are they now: 2016 campaign edition
The 100th day of Trump's presidency is a good time to check in.
ANALYSIS: Trump's Twitter use brings risks and rewards
Some of his tweets have driven the news cycle for weeks.