As Biden touts his support for Ukraine in its war against Russia -- calling it out as one of his defining successes of the past year -- he is speaking from a position of relative strength: Americans generally feel better about Biden's Ukraine policies than about his domestic ones. For example, a recent ABC News/Washington Post poll found that his approval rating on the Russia-Ukraine conflict (38%) was higher than on the economy (37%) or the immigration situation on the U.S.-Mexico border (28%).

In addition, according to Gallup polling, a plurality of Americans (39%) think the U.S. is doing the right amount to help Ukraine, while 30% think the U.S. is not doing enough and only 28% think it is doing too much. However, as my colleague Cooper Burton wrote last month, support for aiding Ukraine has cooled a bit since the war started in February 2022, thanks in large part to decreased enthusiasm among Republicans.

-FiveThirtyEight's Nathaniel Rakich

One of the night's more contentious moments came when discussing the debt ceiling and the White House's disagreements with Republicans on government borrowing and spending.

"Some of my Republican friends want to take the economy hostage unless I agree to their economic plans," Biden argued. "All of you at home should know what those plans are. Instead of making the wealthy pay their fair share, some Republicans want Medicare and Social Security to sunset."

The remark was met with resounding boos, and GOP Rep. Marjorie Taylor Greene could be seen calling out "liar."

Speaker McCarthy has also publicly said potential cuts to Medicare and Social Security are "off the table."

Biden continued on to say that he didn't think it was a majority of Republicans or even a significant number, and that he was "politely not naming them."

Based on the booing, he said, "So folks, we all apparently agree, Social Security and Medicare off the books now, right?" he said, which was followed by applause. "All right, we got unanimity."

"Let's stand up for seniors," he added. "If anyone tries to cut Medicare, I will stop them, I will veto it."

Biden is making the argument that his immigration policies have improved the situation at the southern border. However, Americans may not buy it. Poll after poll suggests that Biden's approval ratings are weakest on immigration. For example, ABC News/Washington Post's latest poll found that his approval/disapproval rating on the immigration situation at the border is just 28% approval compared to 59% disapproval. And a January poll from Quinnipiac University had even worse numbers for him: Only 18% approved of his handling of the situation on the Mexican border, while 68% disapproved. That was the lowest that number has ever been in Quinnipiac's polling.

-FiveThirtyEight's Nathaniel Rakich

As Biden turned to discuss policing and public safety in his address, he took a moment to welcome the parents of Tyre Nichols, the 29-year-old Black man who died last month after being assaulted by police in Memphis, Tennessee.

His mother, RowVaughn Wells, and his stepfather, Rodney Wells, received a standing ovation from those gathered in the chamber.

"What happened to Tyre in Memphis happens too often. We have to do better," Biden said. "Give law enforcement the training they need, hold them to higher standards and help them succeed in keeping everyone safe."

The president called for more resources to reduce violent crime, more community intervention programs and more investments in housing, education and job training.

"Let’s commit ourselves to make the words of Tyre’s mother come true, something good must come from this," he said.

While lawmakers in both parties said after Nichols died that they would like to pursue a compromise on policing reform, previous such efforts have failed in Congress.

Arkansas Gov. Sarah Huckabee Sanders plans to use the Republicans' official State of the Union rebuttal to tear into President Joe Biden and the Democrats, focusing heavily on culture war issues while highlighting where she says the economy has failed.

According to excerpts of her speech shared by her office, Sanders, the country's youngest governor and a White House press secretary under President Donald Trump, will pan Democrats as high taxers who "[light] your hard-earned money on fire." But most of the highlights previewed by her office focused on labeling the Democratic Party as a "woke" group in almost religious terms.

"You get crushed with high gas prices, empty grocery shelves and our children are taught to hate one another on account of their race, but not to love one another or our great country. ... And while you reap the consequences of their failures, the Biden administration seems more interested in woke fantasies than the hard reality Americans face every day," she will say. "Most Americans simply want to live their lives in freedom and peace, but we are under attack in a left-wing culture war we didn’t start and never wanted to fight."

"Every day, we are told that we must partake in their rituals, salute their flags, and worship their false idols … all while big government colludes with Big Tech to strip away the most American thing there is -- your freedom of speech."

Republicans like Trump and others are already preparing to challenge Biden ahead of his expected reelection bid, with party leaders divided over the best approach. Sanders, Trump and others have embraced social issues, while others have focused on inflation and government spending.