Schumer on Sunday invited President Trump to testify before the Senate following former FBI director James Comey's testimony last week about the investigation into alleged collusion between the Trump campaign and Russian Federation.
If Comey is to be believed, Sessions has been under Federal Bureau of Investigation scrutiny for months for his meetings with Russian government officials - meetings that Sessions lied about at his confirmation hearing.
It later came out in closed session questioning that Sessions had yet another meeting with Russian ambassador to the US and purported spymaster Sergey Kislyak. Lankford is on the intelligence committee, the forum for last week's riveting Comey testimony and Tuesday's hearing.
Fellow Republicans pressed President Donald Trump on Sunday to come clean about whether he has tapes of private conversations with former FBI Director James Comey and provide them to Congress if he does - or possibly face a subpoena, as a Senate investigation into collusion with Russian Federation or obstruction of justice extended to a Trump Cabinet member.
The 4th U.S. Circuit Court of Appeals in Virginia last month cited the president's campaign statements calling for a "total and complete shutdown" on Muslims entering the U.S.as evidence that the 90-day ban was unconstitutionally "steeped in animus and directed at a single religious group", rather than necessary for national security.
Sessions had been set to testify before a budget-related subcommittee on Tuesday but, in letters to key lawmakers, said the intelligence committee that heard from Comey would be the more appropriate venue considering the Russia-related questions. The White House has denied any collusion with Moscow.
Sessions stepped aside in March from the federal investigation into contacts between Russia and the presidential campaign of Donald Trump after acknowledging that he had met twice past year with the Russian ambassador to the United States. While Comey was a witness scorned by President Trump and ready to dish on the leader who fired him, Sessions remains the top law enforcement official in the country, working for Trump's administration.
In a June 10 letter seen by news agencies, Sessions said he made his decision to appear before the Senate Intelligence Committee in light of testimony by former FBI Director James Comey to the same panel on June 8. Some Democrats said Trump's actions could amount to an obstruction of justice.
Sessions is scheduled to testify from 2.30 pm (1830 GMT) on Tuesday. Instead, his deputy attorney general, Rod Rosenstein, will take his place.
"I think he's considering perhaps terminating the special counsel".
The attorneys general aren't the first to sue Trump over emoluments.
Sessions has been dogged by questions about possible additional encounters with the ambassador, Sergey Kislyak.
Trump has been upset with the AG since his recusal, with Sessions even offering to resign, according to reports. In general, do you think outreach to foreign governments should be coordinated with the outgoing administration during a transition?
But officials said Sessions's relationship with Trump has been strained since the attorney general recused himself from the Russian Federation probe in March.
If he says he has no concerns, which we should fully expect, his answer will be replayed if and when more information comes out about who on the campaign knew what.