When a foreign state — adversary or ally — secretly tries to influence who decides in the United States.
Foreign interference is the set of covert or deceptive activities by a foreign government — or its proxies — to bend American decisions in its favor: hidden financing, influence agents, coercion of diaspora communities, targeted disinformation, espionage, hack-and-leak.
Foreign influence runs on a spectrum. At one end, organized and largely open apparatuses — lobbying, placing well-connected relays, steering priorities — work to get particular decisions adopted. At the other, covert and coercive operations — espionage, disinformation, hack-and-leak — hide the hand entirely. Declared or concealed, the aim is the same: to weigh on who decides in America, and on what gets decided.
The United States is a structural target: an open society, a free press, elections run by thousands of local jurisdictions, and the world's deepest capital and technology markets. That openness is a strength — and a wide surface area that many governments, friendly and hostile, try to work.
The stakes aren't only electoral. Interference targets social cohesion, trust in institutions, and the country's ability to argue with itself without being manipulated. And the defense touches a nerve: the more you surveil to protect yourself, the more you risk eroding civil liberties. The whole art is in the dosage.
Interference is not one country. It runs on a spectrum — from open, legal lobbying to hidden, coercive operations — and both adversaries and allies appear on it.
The most-documented practitioner of "active measures": Cold-War disinformation, then the 2016 social-media and hack-and-leak operations found by the ODNI, Mueller, and a bipartisan Senate committee.
The FBI and congressional and academic studies describe a broad influence apparatus — the United Front — that engages and, at times, pressures diaspora communities, and works academic, economic and political channels. Mostly patient and structural rather than election-day.
In 2020, U.S. intelligence attributed to Iran a batch of spoofed emails impersonating the Proud Boys to intimidate voters, plus a disinformation video — cheaper, cruder operations aimed at chaos.
Allies influence Washington too — through organized, largely open lobbying (AIPAC and others), the placing of well-connected relays, and close security ties, and at times through covert acts, as in the Pollard espionage case below. Open or hidden, the aim is to shape U.S. decisions.
Foreign influence is not limited to clandestine operations. It also includes organized apparatuses — open or semi-open — that place relays, steer priorities, and work to get certain decisions adopted. Declared or concealed, the aim is the same: to weigh on who decides, and on what is decided.
Documented episodes, across eras and actors, show how America saw interference, named it, and had to answer it.
As Nazi propaganda flowed into the United States, Congress passed the Foreign Agents Registration Act in 1938. It didn't ban foreign advocacy — it forced anyone acting for a foreign principal to register and label their materials, so influence would be visible rather than hidden.
America's first instinct was disclosure, not prohibition: expose the hidden hand, and let citizens judge.
In 1985, Navy intelligence analyst Jonathan Pollard was arrested for passing thousands of classified pages to Israel — a close U.S. ally. He pleaded guilty and was sentenced to life in 1987, the first American jailed for life for spying for an ally.
Interference isn't only an adversary's game. The right question is "what was concealed?" — not "was the state friendly?"
The Soviet KGB, with the East German Stasi, spread the lie that the U.S. military created AIDS at Fort Detrick — seeded in a Soviet-funded Indian newspaper in 1983 and amplified worldwide from 1985. The falsehood outran the truth for years.
"Active measures" don't need to be believed everywhere — only to spread doubt. The antidote was patient public rebuttal, not censorship.
The ODNI (2017), the Mueller Report (2019) and a bipartisan Senate committee documented Russia's 2016 operation. By 2020 the field had widened: intelligence named Iran for the spoofed-email scheme and warned of China's broader influence efforts. The threat was no longer one country.
The digital age lowered the cost of interference and multiplied the actors. Defense now means watching many hands, not one.
Where no public, verifiable figure exists, BEAVER.WATCH describes the situation in qualitative terms rather than invented numbers. Every episode above is drawn from declassified records, official reports, court cases, or law.
None of these is free: the most effective measures are also the ones that weigh most on liberties — and they must apply evenly to friend and foe.
Make acting on behalf of any foreign state — allied or not — visible and declarable.
COST: LIBERTIES · RISK OF STIGMATIZING DIASPORASPaper ballots, risk-limiting audits, and CISA support for local jurisdictions.
COST: FUNDING · FEDERALISM FRICTIONLabel state-media accounts and disclose coordinated inauthentic networks — from every source.
COST: FREE-SPEECH LINE-DRAWINGProtect targeted voices and ease reporting. Turns communities into bulwarks rather than pressure points.
COST: LOW FOR LIBERTIES · SLOWER EFFECTThe central trade-off: "hard" tools (registries, surveillance, takedowns) act fast but nibble at liberties; "soft" ones (transparency, civic literacy, community trust) cost little in liberties but act slowly. A rule that only targets rivals — and excuses friends — isn't security, it's politics.