Kavanaugh worked in the Bush White House as an associate counsel, Staff Secretary and Assistant to the President. Trump touted Kavanaugh as "a brilliant jurist" with "impeccable credentials" before inviting Kavanaugh to the podium, where the judge said he was "deeply honored" to be Trump's choice.
A Yale graduate and devout Catholic who went to a Jesuit high school, he once clerked for Justice Kennedy, the man he would replace.
Trump a year ago appointed Gorsuch, who has already become one of the most conservative justices, after Senate Republicans in 2016 refused to consider Democratic former president Barack Obama's nominee Merrick Garland to fill a vacancy left by the death of conservative Justice Antonin Scalia.
"Throughout legal circles he's considered a judge's judge, a true thought leader among his peers", Trump, who named conservative Justice Neil Gorsuch to the court a year ago, told an applauding audience in the White House East Room.
On Monday, Trump phoned retiring Justice Kennedy to inform him that his former law clerk would be nominated to fill his seat.
President Trump announces his Supreme Court nominee.
Hardiman, a runner-up when Trump chose Neil Gorsuch as his high court nominee a year ago, received a wave of new attention in the weekend discussions, according to two people briefed on the matter but not authorized to speak publicly about it.
Since the announcement of Kennedy's retirement on June 27, both Democrats and Republicans are seeing the Supreme Court vacancy as one of the most significant appointments in years, which could shape the course of the judicial landscape for decades.
'Colombia you cheating, robbing...' - Alan Shearer's off-air rant after England win
England definitely has the offensive edge in this game, but Colombia can neutralize it if they can shut down Kane. Erika Rodriguez who was born in Britain but whose family are from Cali in Colombia , said the loss "just sucks".
The nominee must be confirmed by the US Senate, which the Republican president's party narrowly controls 51-49.
Kavanaugh later contributed to prosecutor Kenneth Starr's report into Clinton's affair with White House intern Monica Lewinsky.
Hearings for the most recent nominees to the Supreme Court have lasted four or five days, though there were 11 days of hearings for Robert Bork's nomination in 1987.
What is nearly certain - and those across the political spectrum agree - is that Kavanaugh's selection will spark a major confirmation battle in the U.S. Senate, where Republicans hold a narrow 51-49 majority and opposition Democrats say they will fight to prevent the high court from swinging further to the right. "If confirmed by the Senate, I will keep an open mind in every case and I will always strive to preserve the Constitution of the United States and the American rule of law", Kavanaugh said.
Still, Senator Roy Blunt of Missouri, a member of the Republican leadership, said on NBC's "Meet the Press" on Sunday that the Senate "can confirm any of the four names being mentioned".
Kavanaugh is likely to be more conservative than Justice Kennedy on a range of social issues.
With Senator John McCain battling cancer in his home state of Arizona, Republicans can now only muster 50 votes. The White House hopes Kyl's close ties to Senate Republicans will help smooth the path for confirmation. "Given his background and record, I am confident Judge Kavanaugh will make an extraordinary justice who will adhere to America's constitutional principles and protect our freedoms".
"Judge Kavanaugh has the qualifications that make him immensely qualified to take a seat on the highest court in the land". Joe Manchin of West Virginia, Joe Donnelly of IN and Heidi Heitkamp North Dakota.
By contrast, Senate Republicans were in the majority in 2016, when McConnell and his GOP colleagues blocked President Barack Obama's Supreme Court nominee, Judge Merrick Garland, for more than nine months, following the death of Justice Antonin Scalia. Susan Collins of ME and Lisa Murkowski of Alaska, to oppose any nominee who threatens Roe v. Wade.