Each state of the United States selects two senators to represent their states in the United States Senate. In 1913, the 17th Amendment[?] to the United States Constitution provided for the direct popular election of senators; prior to this, senators were selected by state legislatures.
... Passage of kidney stones through the urethra can be painful and subsequently it can lead to urethral strictures[?]
Endoscopy of the bladder via the urethra ...