The United States Senate has rejected a bill that aimed to block a US weapons sale to Israel amid the country’s war on Gaza, an outcome that rights advocates say does not take away from a growing push to condition aid to Washington’s top ally.

A resolution to halt the sale of tank rounds failed to advance in a 79 to 18 vote on Wednesday, with prominent progressives and mainstream Democratic senators backing the effort.

Two more resolutions to halt the sale of other weapons also failed after winning fewer than 20 votes.

Senator Bernie Sanders introduced the so-called Joint Resolutions of Disapproval (JRDs) in September to oppose a $20bn weapons deal approved by the administration of President Joe Biden.

It was the first time ever that a weapons sale to Israel was subjected to such a vote.

While support for the push may appear minimal, it represents a crack in the bipartisan consensus over unconditional US aid to Israel.

Beth Miller, political director at the US-based advocacy group Jewish Voice for Peace, said the vote is an “inflexion point” in the decades-long effort to restrict Washington’s military assistance to Israel.

“This is too little too late; this genocide has been going on for 13 months, but that does not change the fact that this is a critically important step,” Miller told Al Jazeera.