Following former Federal Bureau of Investigation (FBI) director James Comey's testimony last week, "it is important that I have the opportunity to address these matters in the appropriate forum", Mr Sessions wrote to Mr Shelby, who chairs the Senate appropriations panel.
Sessions will testify to the Senate intelligence committee on Tuesday.
He'll most likely be asked about his involvement in the Russia investigation and his undisclosed contacts with the Russian ambassador.
The New York City federal prosecutor who expected to remain on the job when Trump took office but ended up being fired said he was made uncomfortable by one-on-one interactions with the president - just like Comey was.
Trump says United States is committed to mutual support of North Atlantic Treaty Organisation allies
But here is what we absolutely know unequivocally about this administration: nothing they say can ever be taken a face value. Trump demurred when asked whether tapes of his talks with Comey actually exist.
Most Democrats are being cautious about whether President Donald Trump might have obstructed justice in the Russian Federation investigation and his dealings with fired FBI chief James Comey.
It would be "fitting" for the attorney general to appear before Judiciary, Feinstein, the top Democrat on that panel, said on CNN's State of the Union on Sunday.
In response to Comey's testimony, Sessions issued a statement contradicting some of what Comey said.
While he may be safe from prosecution or dismissal under Trump, Sessions must know he is damaged goods.
During his confirmation hearing, Mr. Sessions said that he had not met with Russians during the campaign. And the same committee asked Comey for his memos about conversations with Mr. Trump.
Magic: 'Showtime' Lakers Would Sweep The Warriors
So I never understand that, nor do I get into it. "They were great in their time, we're great in our time and respect that". No, I think I sound stupid because that's how all of it be sounding to me.
"Our judgment, as I recall, was that he was very close [to the campaign] and inevitably going to recuse himself", Comey said during his testimony.
Sessions is expected to face sharp questioning tomorrow as pressure ramps up on Trump to hand over to Congress any tapes of his private conversations with Comey.
"That's a question for the committee", said Justice Department spokeswoman Sarah Isgur Flores. "Totally illegal? Very 'cowardly!'", he wrote.
Preet Bharara (buh-RAH'-ruh) tells ABC's "This Week" that he thinks Trump was trying to "cultivate some kind of relationship" with him. Feinstein said she was especially concerned after National Intelligence Director Dan Coats and National Security Agency Director Michael Rogers refused to answer questions from the intelligence committee about possible undue influence by Trump. Comey also detailed how Trump told him he "hoped" he would drop the investigation into National Security Advisor Mike Flynn and his contacts with Russian Federation. A day before Comey appeared before the Senate intelligence panel, National Security Agency Director Mike Rogers and Director of National Intelligence Dan Coats, also members of Trump's Cabinet, took the stand. Sessions in March removed himself from involvement in any probe into alleged Russian election meddling but maintained he did nothing wrong by failing to disclose that he met past year with Russia's ambassador.
President Donald Trump is predicting that former FBI Director James Comey's "leaks will be far more prevalent than anyone ever thought possible".
SpaceX taking recycling all way to orbit for NASA
While SpaceX's Dragon capsule makes history in the sky, the pad from where it launches is also celebrating a little history. A handful of cubesats (a miniaturized satellite for space research) developed by schools and universities for launch.