Cornyn, the Senate's second-ranking Republican, was expected to speak at the Houston HBCU's ceremony on Saturday.
No word yet on who will replace James Comey as director of the Federal Bureau of Investigation. John Cornyn is a former judge who may be itching for a new opportunity, and he likely would sail through a confirmation process that might trip up other contenders.
In the Senate, Cornyn will remain majority whip.
According to CNN, at least eight people have been identified as candidates for the position, including acting FBI Director Andrew McCabe.
"I don't think that's a good strategy at all", Collins said, adding that she wanted to question Rosenstein Thursday on whether a special prosecutor was indeed needed.
Prior to his election to the Senate in 2002, Cornyn served as Texas attorney general, a Texas Supreme Court justice and a local judge. The White House has shifted its account of why Comey was sacked multiple times since it was announced last Tuesday. He is a popular senator who is well-liked among Republicans and less of a lightning rod to Democrats. "But these are not normal circumstances".
Trump's sudden removal of Mr Comey from the position this week set off a political firestorm in Washington, fuelling fears that the president was trying to stifle the bureau's probe into possible coordination between his campaign and Russian Federation to influence the outcome of the 2016 election.
Return to path of denuclearization: United Nations to N. Korea
North Korea has also launched satellites into orbit on long-range rockets that share some of the same technology as missiles. But Klingner noted that North Korea's behavior hasn't changed and China isn't getting as tough on Pyongyang as it could.
So that leaves Trump to choose a figure without a national profile like former assistant attorney general Alice Fisher or New York Court of Appeals judge Michael Garcia, or a more known quantity like Cornyn.
"Senator Cornyn is imminently qualified".
Several of those named could be considered outside shots: For example, while Thompson criticized Comey's handling of the Clinton emails, he also co-authored a Washington Post op-ed last October calling for Trump's electoral defeat.
But in a single sentence statement released by his office he said, "I have the distinct privilege of serving 28 million Texans in the United States Senate, and that is where my focus remains". Whoever is selected is appointed to a 10-year term, although they can be removed by the president.
And he would not say if there was a pledge for loyalty, as Trump reportedly asked Comey to commit to earlier this year, though the White House has denied that account. Fisher and Townsend were the only women on the list of candidates.
NBC's Chuck Todd asked why former FBI Director James Comey's predecessor should be an FBI agent and not a US attorney or prosecutor.