Back then, the walls and the ceiling looked the same as they do now. The curtains have changed, but the doorways, the chandeliers, the wall sconces all looked the same. HUAC used one long elevated table that snaked around this side of the room. During the hearings, the members could sit up there and look out over the rest of the room, which would’ve been absolutely packed—dozens of reporters and staff were seated around tables toward the front, and members of the public would sit in chairs in the back or stand along the sides of the room. And the witness would sit at a table in the front, facing the committee.

One witness in particular will be familiar to this audience. In October 1947, Ayn Rand sat here and testified as part of a series of hearings on “The Communist Infiltration of the Motion Picture Industry.” She testified to refute a rosy depiction of the Soviet Union in a film that had come out a few years before. There was an obvious irony to her willing participation in those hearings. She had a personal understanding of the dangers of unchecked power, but HUAC undermined the values and protections that keep power in check. The nation was gripped by the fear that it was being infiltrated by ideas hostile to the American way of life, and HUAC responded by tossing away respect for due process, free speech, and the presumption of innocence.

We see parallels today in the fight against terrorism. Americans are worried about the threat of terrorism, and the executive branch has used that fear to push for laws that give it broader powers in the name of national security and public safety. And my colleagues are often eager to pass them through Congress with weighty titles that sound like something out of 1984.

What’s a libertarian in Congress to do? Today, I want to share with you a couple recent stories that illustrate how my staff and I operate, how it’s different from other offices, and how just one person can make a difference in the defense of liberty.

A couple weeks ago, the House considered H.R. 5606, the so‐​called Anti‐​terrorism Information Sharing Is Strength Act, or the “Anti‐​ISIS Act.” I’m sure you won’t be surprised to hear that this bill has little to do with stopping terrorism. It was listed among the suspension bills for the week, meaning leadership intended to have it fast‐​tracked through the House, skipping committee and all the other normal procedures. In exchange for the fast‐​track process, suspension bills need a two‐​thirds majority to pass instead of just a simple majority.

Unlike most offices, my staff and I actually read all the bills—yes, even the suspension bills. The stated reason for ha ving a process to suspend the rules and fast track a bill is that some bills are considered uncontroversial—if few members object to a bill, the idea goes, it would simply be a waste of everyone’s time to have it go through the normal committee process. Most offices take leadership at their word when a bill is put on the suspension calendar—they assume that if it’s up under suspension, it must be fine. Needless to say, that’s not how my office works. We read and think about each and every bill, which is no small undertaking—on Friday night we were given a list of 25 bills that were to be considered the following Monday.

H.R. 5606 amends a section of the Patriot Act that instructs the Treasury Department to adopt regulations encouraging cooperation between banks and the government, with the “specific purpose of encouraging” the government to share information with banks about persons suspected of terrorism or money laundering. This section also includes a provision that allows banks to share information about these people with each other, without being liable to their customers for sharing their private information.

On the face of it, this law plainly encourages sharing of information from the government to financial institutions. But this is the Patriot Act. “Plain meaning” doesn’t apply. Instead, Treasury has used this law to create a program whereby the government can compel financial institutions—22,000 of them—to provide law enforcement the account and transaction information of people they suspect of terrorism or money laundering.

No probable cause. No warrant. No due process.

This program is bad enough as it is, but H.R. 5606 expands the program to cover dozens and dozens of additional federal crimes. Murder, drug offenses, copyright theft … all the way down to stealing mail. I had to stop this bill, but I didn’t have much time.

We spent the weekend drafting materials to oppose the bill, and, of course, I took the fight to social media. On Monday morning, I issued a vote alert on the bill through the House Liberty Caucus, of which I’m chairman. Throughout the day, I lobbied my colleagues personally, and my staff lobbied other offices through emails and phone calls.

On Monday afternoon, I went to the floor early to make sure there would be an actual vote on the bill. You see, House leaders often pass suspension bills with only a few members present. Votes are officially scheduled for 6:30 p.m. on the first voting day of the week, but leaders typically voice vote suspension bills in the afternoon before most members are even back in town! How do they do that without a quorum? Well, if no one is on the floor to object to the lack of quorum, they simply ignore the quorum requirement!

So, I made sure I was there on time for the floor debate. Sure enough, both Republican and Democratic leaders had planned to pass this expansion of the Patriot Act by voice vote! Under the rules, did I have enough support to demand a roll call? No. But they didn’t have enough members for a quorum. I asked for the yeas and nays to secure a roll call vote for that evening. And they granted me the roll call, knowing that I could stall the entire process simply by objecting to the lack of quorum. At 6:30 p.m., just before votes, the scheduling email came out from the whip team. They had changed the order of the votes to put the Patriot Act bill last. This is usually done to give leadership time to convince members on the floor to support the bill, so I knew leadership must have been at least a little concerned by my actions.

The vote series started. I brought copies of the vote alert from the House Liberty Caucus with me to the floor and passed them out to my colleagues as we voted on the other bills. Then we got to the last vote in the series, a two‐​minute vote on the Patriot Act bill. And, to everyone’s surprise, it failed. It had 229 yeas, 177 nays, but it needed two‐​thirds because it was considered under suspension.

It failed.

Think about that. It’s not as if bills never fail on the floor, but it is exceedingly rare—it happens only a few times a year, if at all. My office learned about the bill only three days ahead of the vote, and when Monday morning rolled around, we had less than 12 hours to put out our material and lobby other offices. No one was talking about this bill except for my staff and me—not the outside groups, not other members who care about these issues, because no one was paying any attention to it. Without our efforts, this bill would have passed 400‐​and‐​something to 2 or 3, maybe 4.

We hear so often: “I’m only one person. What can I possibly do?” Well, I’m here to tell you firsthand that one person’s efforts really can make a difference. But making that difference doesn’t happen overnight. You have to lay the groundwork. In this case, it wouldn’t have been possible if my staff and I didn’t operate the way that we do—if we didn’t believe strongly in following the Constitution, in reading every bill, in consistency and the rule of law. These things have earned me trust from my colleagues—especially on due process, civil liberties, and privacy—and respect from other offices for my staff.

A few weeks earlier, in mid‐​June, the Orlando shooting happened. The following week, a bill called the Homeland Safety and Security Act, H.R. 5611, appeared on the legislative calendar. It was introduced by Majority LeaderMcCarthy as a response to Orlando, and it included one short, terrifying section that mirrored the Republican‐​backed Cornyn proposal the Senate had voted down the week before. It allowed the Department of Justice and a judgeto deny gun purchases to anyone investigated for terrorism within the last five years (i.e., on one of those secret government lists) merely upon probable cause to believe that the person will commit an act of terrorism. Not that the person had committed an act of terrorism, or had conspired or attempted to commit terrorism, but that he or she will commit terrorism in the future.

Having judges make factual, legally binding determinations of what an innocent person will do is not the practice of a free society—it’s precrime; it’s something out of the film Minority Report. Due process requires more.

We issued a statement through the House Liberty Caucus, blasting the bill and telling my colleagues we would be scoring against it. I filed an amendment to strike the gun section from the bill. That night, I went to a meeting of the House Freedom Caucus (not to be confused with the House Liberty Caucus!). At the start of the day, almost no one else opposed the bill—at best, they were neutral—but one by one, members were convinced to oppose it. And before the meeting adjourned, HFC took an official position against it. The Democrats also were expected to oppose it (because it wasn’t dystopian enough), so without HFC’s support, the bill didn’t have enough votes to pass. Soon after, leadership quietly pulled it from the calendar. We never voted on it.

Speaker Ryan was later asked about the bill at a press conference, and he said, “We’re not going to take away a citizen’s constitutional rights without due process.” Remember, this was the Cornyn proposal that Republicans had been lauding. This was Republican leadership’s bill in the House. It was offered by the majority leader. It was supposed to pass with overwhelming Republican support. But here was Speaker Ryan on TV suggesting it violated due process! I had made the constitutional argument that convinced my colleagues, and here it was, being echoed in the speaker’s remarks.

Now, this victory, along with the other victories over the past couple months, was modest. But these are just small examples of what’s possible with this approach to legislating. Abiding by the Constitution, upholding the rule of law, and applying principles consistently doesn’t just allow me to take the right votes—it also makes me more effective at defending liberty in the halls of Congress.

And, in recent weeks, it has allowed me to convince my colleagues that our rights must always be secured if we are to avoid repeating the kind of history that happened in this room.