The White House offered five agenda items the president will address: jobs and the economy, infrastructure, immigration, trade, and national security.
But ABC News is looking at five other possibilities that might garner a mention or may be a silent presence in the room.
At least 24 House members and several senators are bringing Dreamers or people with ties to immigration reform to the State of the Union. While Trump is expected to address the topic, will he take the opportunity to address the Dreamers directly? Expect TV cameras to scan the guest gallery and highlight these guests as the president speaks on the issue.
Trump has said he wants a bipartisan solution to immigration reform so look to see if anything he says on the topic gets applause from both sides of the House chamber.
“For many years, for many, many years they have been talking immigration and never got anything done. We're going to get something done. We hope. It has got to be bipartisan. The Republicans really don't have the votes to get it done in any other way. It has to be bipartisan. But hopefully the Democrats will join us or enough of them will join us so we can really do something great for DACA and for immigration in general,” the president said on Monday.
The Supreme Court
Thomas and Alito also skipped President Obama’s speeches, saying they wanted to maintain their impartiality.
The opioid crisis is expected to get a mention. The White House announced on Monday that police officer Ryan Holets of Albuquerque, New Mexico, will sit in the first lady’s box. He and his wife adopted a baby from parents who suffered from opioid addiction.
Unknown is if Trump will call for a repeal and replacement of Obamacare, which is something he did in his February speech.
Things left unsaid
As important as what the president says in his speech, there are also the things observers will be watching for that will go unsaid.
The #metoo movement: The president isn’t expected to mention this in his remarks but several Democratic lawmakers will wear black, following the lead of actresses at the Golden Globes earlier this month, to highlight the issue. Democratic lawmakers are also bringing sexual assault victims as their guests. Additionally, in an effort led by Reps. Katherine Clark, D-Conn., and Joe Crowley, D-N.Y., some members of Congress will wear the TIME’ UP pin to stand in solidarity with survivors of sexual harassment and assault.
Democratic Rep. Henry Cuellar of Texas is bringing Stephen Willeford, a member of the Sutherland Springs community, who bravely confronted the shooter during the fatal attack last November at the First Baptist Church in Texas, as his guest.
Also boosting the Democrats is polling. They held a 14-point advantage among likely voters when it came to a congressional preference in the latest ABC News/Washington Post poll.
The Republican-passed tax cuts are expected to be a major theme in the president’s address and in GOP messaging during the 2018 election. The White House announced Corey Adams of Dayton, Ohio, will sit in the first lady’s box. In 2017 Corey and his wife became first-time homeowners and “they will invest their extra money from tax reform into their two daughters’ education savings.”
Whatever is said (or unsaid), the State of the Union usually draws a large audience and gives the president a chance to lay out his agenda for the coming year. Trump acknowledged that on Monday when he said his address “is a big … important speech.”
And Sanders encouraged people to watch at her press briefing on Monday.
Asked what the president’s optimistic message will be, she responded: "I think it's incredible and I think that you'll hear that in the president's words tomorrow night. Look we've got an economy that's booming. ISIS is on the run. We're remake the judiciary in a way that actually believes in the Constitution. There are great things happening."
ABC News will begin livestreaming coverage of the State of the Union Address on Tuesday night starting at 8:15 p.m. EST.
ABC News' Devin Dwyer, John Verhovek and Dee Carden contributed to this report.