The federal government can make all sorts of laws if it so desires. There could be constitutional issues in the case of spam since that is a form of speech and may fall under the freedom of speech amendment, however, freedom of speech is not an absolute, and some forms of speech are not deemed to be legitimate, so possibly the courts would uphold an anti-spam law. If not, an anti-spam constitutional amendment would still be a possibility. Enforcement of those laws will have varying degrees of success. The federal government has not been able to control or stop heroin addiction, and I would not expect complete success if they attempted to control or stop spam, or C-span, or whatever it is you are asking about, but they may still wind up arresting some people, and stopping at least some of what they are trying to stop.
the Federal Government asserted the power in the west by using force to stop the Whisky Rebellion.
december 23 2012
To stop any possibility of a communist revolution.
The Federal Gov. can and will file charges (or just threaten to stop federal money from coming) whenever a State refuses to follow a Federal Law/order/etc.
it sent army troops to help state police stop the violence
pass legislation known as "stop-gap funding" to keep the government running
It sent army troops to help state police stop the violence.
The US constitution reserves the creation to currency to the Federal government
He believed that a democratic government would stop the unjust majorities from taking control over the government.
Yes. President Roosevelt's attempt to pack the Supreme Court represented an unconstitutional violation of the separation of powers, and would have given him almost dictatorial control over the federal government.
Revisions, permanent monitoring, and separation of powers (branches of government)
The US government runs Medicaid and Medicare and I think they are pretty solid. Private healthcare companies are thieves and robbers, and that's why they are blocking the efforts of the government to have healthcare reform.