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This is an international website - and in most places "congress" is not elected, but individual politicans are. Please clarify.
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2 houses. Senate and House of Representatives.
One, just the congress.
Each member of congress is elected by the people of his/her state. Each member of congress is elected by the people of his/her state.
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We have a bicameral legislature, which means there are two houses: House of Representatives and Senate.
There are two legislative chambers - the House of Representatives and the Senate.
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Two. The House of Representatives, and the Senate.
The US House is composed of 435 voting Representatives.