Volodymyr Zelensky's third visit to Washington on Tuesday was a last-ditch effort to win new military aid from Congress before the currently approved amount runs dry.
When Mr Zelensky came to Washington last year, the US approved a $50bn aid package that helped fuel Ukraine's efforts to regain territory ceded at the outset of the Russian invasion.
This time around was different.
After meeting with Mr Zelensky on Tuesday morning, Republican senators were clear that, while they sympathised with Ukraine's plight, they view the situation at the US border as a more pressing national security concern.
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