The US Congress has demanded Russia immediately withdraw from Ukraine and urged US President Barack Obama to impose punitive economic sanctions on Moscow.
The Senate on Tuesday expressed its support for Ukraine by passing strongly worded resolutions, using tough language against Russia and urging it be suspended from the Group of 8 world powers.
The non-binding resolution, passed by unanimous consent, called for targeted economic sanctions to "compel President Vladimir Putin to remove his armed forces from Ukrainian territory and return that territory to full Ukrainian sovereign control".
The measure also called on world soccer's governing body FIFA to reconsider its decision to hold the 2018 World Cup in Russia.
The House of Representatives also passed a resolution to condemn what House Speaker John Boehner called "Russia's hostile acts of aggression".
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"Vladimir Putin has proven himself a menace and a threat to stability in the region, and he must be held accountable," Boehner said.
The moves precede legislation to be brought before the powerful Senate Foreign Relations Committee on Wednesday, aimed at aiding Ukraine and punishing Russia.
A sticking point is whether changes to International Monetary Fund rules on how much money nations contribute will be included in the measure.
