Answer:
The answer is: Policy Claim.
Explanation:
There are three common types of claims: Value, Policy and Factual.
In this case: "[Compulsory voting] should be implemented in the United States", is a Policy claim, as these attempt to persuade the government or someone else to take some action in solving a problem. The modal verb "should" is commonly used here.
The Value Claim, isn't possible as it attempts to persuade you to approve or dissaprove something, in form a fact, using the simple present, for example:
And finally, a Factual Claim isn't possible either as it attempts to persuade you that something existed, exists, or will exist, for example:
