What type of situation in American federalism has often resulted in the act of preemption?

Also asked, which Supreme Court decision was the first time since the New Deal that the court limited the power of Congress under the Commerce Clause?

In the landmark decision in United States v. Lopez , for the first time in over 50 years the U.S. Supreme Court limits the powers of Congress under the commerce clause when it strikes down the 1990 Gun-Free School Zones Act.

Subsequently, question is, what type of issues is the national government responsible for? Responsibilities. National governments are responsible for maintaining internal and external security and stability. Usually, that means they're responsible for establishing national laws and enforcing them. They also must raise and train a military and set international policy.

Correspondingly, which Supreme Court decision was the first time since the New Deal?

That decision, United States v. Lopez, was the first time since the New Deal that the court found Congress to have exceeded its authority under the commerce clause. States' rights, as such, were not directly at issue either in the Lopez case or in the decision on Monday.

Which of the following is an example of a concurrent power?

In the United States, examples of the concurrent powers shared by both the federal and state governments include the power to tax, build roads, establish bankruptcy laws, and to create lower courts.