President Joe Biden initially restricted Ukraine from using U.S.-supplied weapons to strike inside Russia except for limited defensive purposes, but later allowed Ukraine to use longer-range U.S. Weapons to conduct strikes inside Russian territory near Kharkiv.
Joe Biden didn't allow Ukraine to attack Russia and under his presidency USA delivered only enough weapons so Ukraine can defend

Biden allows Ukraine to hit some targets in Russia with US weapons
Source: bbc.com
Key Evidence
PBS News and Reuters report Biden's decision to allow longer-range U.S. Weapons for limited strikes inside Russia near Kharkiv.
pbs.orgpbs.orgWhat Biden’s decision to allow Ukraine to use longer-range U.S. weapons means...
reuters.comreuters.comBiden allows Ukraine limited use of US arms to strike inside Russia, say US...
France24, BBC, and AP News confirm the permission was specifically for defensive counter-fire purposes in the Kharkiv region.
france24.comfrance24.comBiden allows Ukraine to hit Russia with US weapons to defend Kharkiv
bbc.combbc.comBiden allows Ukraine to hit some targets in Russia with US weapons+1 more
AEI analysis explains the initial reluctance and political context behind restricting Ukraine's ability to strike inside Russia.
aei.orgaei.orgWhy Won’t Biden Let Ukraine Hit Russia Back with US Weapons? - American...
What the Evidence Shows
Multiple credible sources confirm that President Biden initially imposed restrictions on Ukraine's use of American-supplied weapons, limiting their use primarily to defensive operations within Ukrainian territory. This aligns with the claim that Biden did not broadly allow Ukraine to attack Russia.
However, in May 2024, Biden partially lifted these restrictions, permitting Ukraine to use U.S. Weapons for limited strikes inside Russian territory, specifically near the Kharkiv region. This was framed as a defensive measure to protect Ukrainian forces and territory under threat from Russian attacks.
The claim that the U.S. Delivered only enough weapons for Ukraine's defense is generally supported by the cautious approach described in the sources, which emphasize controlled and limited use of U.S. Arms rather than enabling offensive operations deep into Russia.
The sources indicate a nuanced policy: while Biden did not allow unrestricted Ukrainian attacks on Russia, he authorized targeted strikes inside Russian territory for defensive counter-fire purposes.
Some opinion pieces (e.g., AEI) discuss the political and strategic reasons behind these restrictions, highlighting concerns about escalation and congressional opposition.
Overall, the statement is mostly accurate but simplifies a more complex and evolving policy that shifted from strict limitations to conditional allowances for strikes inside Russia.