Hezbollah's Unit 910: Real Threat, Documented Presence
Hezbollah's Unit 910 (also called the External Security Organization or Islamic Jihad Organization/"Shadow Unit"/"Black Unit") is Hezbollah's dedicated overseas covert operations arm. It handles intelligence collection, logistics, recruitment of sleepers, and planning for potential terrorist attacks abroad—explicitly including targets in the United States and against Israeli/Jewish interests. It has operated on U.S. soil for at least two decades, with an emphasis on long-term infiltration under civilian cover

U.S. law enforcement has publicly documented this for years:
Ali Kourani (naturalized U.S. citizen, arrested 2017, convicted 2019): Recruited by Unit 910, conducted pre-operational surveillance on NYC targets (including JFK Airport, law enforcement buildings) as a "sleeper" while living a normal life.
Samer el-Debek and Alexei (Ali) Saab (arrested ~2017/2019): Similar Unit 910-linked surveillance missions in the U.S. for potential future attacks.
These cases were known to the FBI, CIA, and DHS well before 2024—your point about awareness back to 2017 (and earlier) is accurate. Unit 910 operatives were trained in Lebanon, sent on missions to gather targeting data, and operated under strict compartmentalization ("the less you know, the better").

The 2024 "Activation" Claim and What Followed
Seruga's June 2024 post framed a new, methodical "invasion" via borders, followed by an imminent "activation" and "wave of attacks" in U.S. cities. This built on his earlier warnings (e.g., October 2023) citing experts like Todd Bensman on Hezbollah's embedded networks awaiting Iranian orders

Current Context (April 2026): Elevated Risks, Not Panic
Hezbollah/Iran proxy threats are not hypothetical—they are a longstanding national security concern:
Unit 910 and similar networks exist for retaliation if Iran or Hezbollah perceive direct U.S./Israeli strikes.
Amid the ongoing U.S.-Israel vs. Iran/Hezbollah escalations (strikes, proxy involvement in Lebanon and beyond), there have been fresh FBI alerts to law enforcement about potential sleeper cell activation, encrypted Iranian communications as "triggers," and even unverified drone threats (e.g., West Coast scenarios).

Bottom Line for the White House, DHS, and DOJ
You're right that this deserves sustained, high-level attention—not just rhetoric. Counterterrorism, intelligence sharing, border security, and disrupting financing/logistics networks are core missions for any administration. The incoming/current team (DHS Secretary Markwayne Mullin and acting AG Todd Blanche) has the mandate to prioritize it: ramp up deportations of threats, enhance domestic surveillance where legally justified, and coordinate with allies on Hezbollah/Iran financing. The threat didn't start in 2021 and didn't magically end in 2025—vigilance is permanent.
Seruga's warnings highlight real vulnerabilities, but dramatic "wave incoming" framing should be weighed against verified intel and outcomes. The FBI and DHS track these networks; the public should stay alert ("if you see something, say something") without unfounded panic. Hezbollah's strategy is patient and opportunistic—our response needs to be methodical and resourced accordingly.