Washington and Baghdad have been engaged in talks over the presence of US troops in Iraq, who are stationed there as part of an international anti-jihadist coalition.
A spokesman for Kataeb Hezbollah said in a statement that the group "did not perceive the American enemy's seriousness in withdrawing the troops and dismantling its spy bases in Iraq".
"We also haven't seen the necessary seriousness from the Iraqi government to remove them," the spokesman, Abu Ali al-Askari, added in a statement.
The United States considers Kataeb Hezbollah a "terrorist" group and has repeatedly targeted its operations in recent strikes.
During more than three months, as regional tensions soared over the devastating Israel-Hamas war in Gaza, US troops were targeted more than 165 times in the Middle East, mainly in Iraq and neighbouring Syria.
The Islamic Resistance of Iraq, a loose alliance of Iran-backed groups including Kataeb Hezbollah, had claimed the majority of the attacks.
But a deadly drone attack in late January triggered retaliation, with US forces launching dozens of strikes against Tehran-backed groups, including Kataeb Hezbollah.
Three US personnel were killed in the January 28 drone strike in Jordan, near the Syrian border.
Two days later, Kataeb Hezbollah said it was suspending its attacks on US forces.
In February the United States and Iraq resumed talks on the future of the US-led coalition's presence in Iraq, following a request by Iraqi Prime Minister Mohamed Shia al-Sudani who has been calling for an end to the coalition's mission.
The United States has some 2,500 troops in Iraq and 900 in Syria as part of the international coalition against the Islamic State (IS) group.
The coalition was deployed to Iraq at the government's request in 2014 to help combat IS, which had taken over vast swathes of Iraq and neighbouring Syria.
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