For most congressional Republicans, Donald Trump has, until now, been a faraway force. His rapid and unprecedented political ascent played out mostly on cable news — and Twitter — far away from the Capitol.

Very few members of the 115th Congress’ Republican caucus were asked to costar or even play bit roles in the reality show that was The Donald’s road to the White House. Though GOP leaders and backbenchers alike condemned some of his campaign-trail antics, they ultimately celebrated his victory and inauguration.

After all, his ascension as a Republican gave the party unified control of Congress and the White House and a chance to pass a slew of conservative policies into law, remake the federal courts and possibly put multiple conservative justices on a Supreme Court now evenly split along ideological lines.

But that changes Tuesday, when the ongoing made-for-television drama that is the Trump presidency makes its debut in the House chamber as Trump addresses a joint session of Congress for the first time.

The atmosphere will likely be tense. Many lawmakers on both sides of the aisle feel under the microscope and pressured to either defend or attack the new president regarding his every utterance or tweet, and there is no shortage of either of those.