Examples:

• But it's not an act of congress, right?
• But it's not an Act of Congress, right?
• Wait, are you serious about an act of Congress?
• You are now a gentleman by act of Congress.
• The privilege has been suspended only three other times, each pursuant to an act of Congress.
• In 1996, an act of congress (the same legislation that established the GAULA, see para.
• All of these things require an act of Congress. So far, Congress has chosen not to act.
• The Fed, as it's called, has existed since it was first established by an act of Congress in 1913.
• Check. I can't stay here, and I can't leave the country, and I can't get a passport without an act of congress.
• Deeds of cession of these islands to the United States were formally accepted by means of an Act of Congress on 20 February 1929.