Warning: contains spoilers for United States of Captain America #5!
The best speech made by Captain America is the one in which he never said a single word. Steve Rogers is known for being an upstanding superhero and patriotic champion who's superpower, apart from enhanced strength, speed and agility, is the ability to deliver inspiring speeches at the drop of a shield. But in United States of Captain America #5, written by Christopher Cantwell with art by Dale Eaglesham and colors by Matt Milla, Steve Rogers wisely decides to let someone else make the end-of-mission speech: the many members of the Captains Network.
In the United States of Captain America series, terrorists have stolen Steve Rogers' original vibranium shield and plan to use it for nefarious purposes. Sin, the Red Skull's daughter, is in league with Warrior Woman; the two have used the shield to break into a secret military base and unleash Hate-Monger, the spirit of Adolf Hitler. To stop them, Steve Rogers teams up with many of the former Captain Americas, such as Sam Wilson, Bucky Barnes, and John Walker. They also find members of the Captains Network: ordinary citizens who've become the Captain America of their own community.
Hate-Monger plans to broadcast a signal through television networks to force American citizens to associate Captain America's shield with hate, fear, anger and aggression. With minutes to spare, Captain America attacks Hate-Monger alongside the other members of the Captains Network. Hate-Monger is defeated, but the broadcast goes live anyway, putting Steve Rogers in front of millions of Americans. "No," he responds when asked to make a speech. "I think the world's heard enough speeches from me. It's your turn." He points to the Captains Network members, who quickly improvise a speech led by Aaron Fisher.
The entire series, up to this point, has chronicled the many different versions of Captain America appearing in the United States. They come from different communities, each with different beliefs, backgrounds and means. Being a heteronormative, Caucasian, Christian male, Steve Rogers only represents a small part of the United States. By allowing the other members of the Captains Network to speak, he reminds the Marvel Universe - and our own world, by extension - that the role of Captain America is greater than any one person.
With the conclusion of United States of Captain America, Steve Rogers has reacquired his shield and temporarily placed it in a museum. It sits alongside the shields of the other Captains - both the 'official' Captains and the members of the Captains Network. Captain America's ability to make speeches is only rivaled by his ability to lend a voice to the voiceless - which sometimes means not using one's voice at all.