Definition: In this task, you're given a statement, and three sentences as choices. Your job is to determine which sentence clearly disagrees with the statement. Indicate your answer as '1', '2', or '3' corresponding to the choice number of the selected sentence.
Input: Statement: The visa function attempts to facilitate legitimate travel while at the same time denying entry to the United States of certain individuals, including potential terrorists. Choices:  1. Terrorists can easily enter United States without fulfilling visa requirements. 2. The visa system is a tool for preventing terrorists from entering United States. 3. US visa could be obtained from diplomatic missions in other countries.

1