America has a big milestone birthday this year, 250 to be exact. What better way to mark the occasion than to have the monarchy we declared independence from over to celebrate? This week, King Charles III and Queen Camilla began a four-day state visit to the United States. Today (Tuesday, April 28, at 3 p.m. ET), Charles will address a joint meeting of Congress. Before we get into how to tune in, let’s take a look at the jam-packed schedule for the visit, what’s at stake, and the historical precedent. What is Charles and Camilla’s schedule? The king and queen hit the ground running on Monday. They had tea with President Trump and the First Lady Melania at the White House. They also checked out the beehives. Later that same afternoon, they attended a garden party at the British ambassador’s home in Washington, D.C. Tuesday is equally as busy. In the morning, Charles and Trump will have a private meeting. While this is going on the Queen and the First Lady will attend an educational event.…