Trump asks Americans to ‘stay true to our cause’

Fireworks seen from the Lincoln Memorial explode over the Potomac River for Independence Day, Thursday, July 4, 2019, in Washington. (AP Photo/Andrew Harnik)

Everett Loud, of Corning, N.Y., and dressed as President Abraham Lincoln, stands near a sculpture of President Donald Trump holding a cell phone while sitting on a toilet before Independence Day celebrations, Thursday, July 4, 2019, on the National Mall in Washington. (AP Photo/Patrick Semansky)

President Donald Trump waves to the crowd as he leaves an Independence Day celebration in front of the Lincoln Memorial, Thursday, July 4, 2019, in Washington. (AP Photo/Carolyn Kaster)

The U.S. Marine Corps Silent Drill Platoon arrives to perform during an Independence Day celebration in front of the Lincoln Memorial, Thursday, July 4, 2019, in Washington. (AP Photo/Alex Brandon)

President Donald Trump speaks during an Independence Day celebration in front of the Lincoln Memorial, Thursday, July 4, 2019, in Washington. (AP Photo/Alex Brandon)

President Donald Trump, accompanied by Joint Chiefs Chairman Gen. Joseph Dunford, left, and Acting Defense Secretary Mark Esper, right, watch as aircraft fly overhead during an Independence Day celebration in front of the Lincoln Memorial, Thursday, July 4, 2019, in Washington. (AP Photo/Andrew Harnik)

President Donald Trump, first lady Melania Trump, Vice President Mike Pence and Karen Pence and others stand as the US Army Band performs and the US Navy Blue Angels flyover at the end of an Independence Day celebration in front of the Lincoln Memorial, Thursday, July 4, 2019, in Washington. (AP Photo/Alex Brandon)

WASHINGTON — President Donald Trump on Thursday celebrated the story of America as “the greatest political journey in human history” in a Fourth of July commemoration before a soggy but cheering crowd of spectators, many of them invited, on the grounds of the Lincoln Memorial.