Here is a list quoted directly from Article 1 Section 8 in regards to the Legislative branch of the government.
The Congress shall have Power To lay and collect Taxes, Duties, Imposts and Excises, to pay the Debts and provide for the common Defence and general Welfare of the United States; but all Duties, Imposts and Excises shall be uniform throughout the United States;
To borrow money on the credit of the United States;
To regulate Commerce with foreign Nations, and among the several States, and with the Indian Tribes;
To establish an uniform Rule of Naturalization, and uniform Laws on the subject of Bankruptcies throughout the United States;
To coin Money, regulate the Value thereof, and of foreign Coin, and fix the Standard of Weights and Measures;
To provide for the Punishment of counterfeiting the Securities and current Coin of the United States;
To establish Post Offices and Post Roads;
To promote the Progress of Science and useful Arts, by securing for limited Times to Authors and Inventors the exclusive Right to their respective Writings and Discoveries;
To constitute Tribunals inferior to the supreme Court;
To define and punish Piracies and Felonies committed on the high Seas, and Offenses against the Law of Nations;
To raise and support Armies, but no Appropriation of Money to that Use shall be for a longer Term than two Years;
To provide and maintain a Navy;
To make Rules for the Government and Regulation of the land and naval Forces;
To provide for calling forth the Militia to execute the Laws of the Union, suppress Insurrections and repel Invasions;
To provide for organizing, arming, and disciplining the Militia, and for governing such Part of them as may be employed in the Service of the United States, reserving to the States respectively, the Appointment of the Officers, and the Authority of training the Militia according to the discipline prescribed by Congress;
To exercise exclusive Legislation in all Cases whatsoever, over such District (not exceeding ten Miles square) as may, by Cession of particular States, and the acceptance of Congress, become the Seat of the Government of the United States, and to exercise like Authority over all Places purchased by the Consent of the Legislature of the State in which the Same shall be, for the Erection of Forts, Magazines, Arsenals, dock-Yards, and other needful Buildings; And
To make all Laws which shall be necessary and proper for carrying into Execution the foregoing Powers, and all other Powers vested by this Constitution in the Government of the United States, or in any Department or Officer thereof.Please notice now, how many of these powers include farm subsidies, medicaid, social security, or even imply that it is within the power of the government to begin such programs. Only the last one. Which is the phrase of this document most used by legislature to take on all these programs, pork and expenditures. the Foregoing Powers = the powers listed before. Now, how is it necessary for the government to institute those programs to fulfill these "Foregoing powers". It isn't. That's anticlimactic. Now, to look at another Government function gone astray: the power of the government over the states.
Let's see what the Constitution says about that.
The powers not delegated to the United States by the Constitution, nor prohibited by it to the States, are reserved to the States respectively, or to the people.
There now, how does the national government get around this? Were we ever meant to have a large central government that took care of us? No. This can be clearly seen in our method of electing a president. What we have today is the remnants of what once was. Wouldn't it make more sense to have a popular vote selection instead of the electoral college? Well, it would if we were meant to have a central government with state borders being merely geographical like they almost are today. Instead, the popular vote in the state decides where all the electoral votes go. Doesn't this rather imply that the way the nation used to be, there were a bunch of independent state/countries much like the EU is today? With open borders, a continental council of policy makers and treaty signers (please note, that the meeting of the FF (founding fathers) was called the Continental Congress, not the national congress) and a common currency? But back to the question, how does the federal government get around this? Because of our ignorance. People these days just don't care about what happens. They want their government handouts, subsidies etc... and vote into office those people who they think will give them to them. These are the statesmen who turn around and take freedom from the people and turn us more and more into a Marxist communist state. These are also the people who believe that we should be working towards a one world unity and government.
Now we come to another question (please read on?) What is wrong with one world government. If you are a Christian, read your Bible. If you are non-Christian, read 1984, Animal Farm, Fahrenheit 451. Super states with unlimited government power of censorship and laws. The very people who make their grand speeches about tolerance silencing the publication of any opinion or truth whatsoever, or worse silencing by force those who disagree with the commonly held practice. If it were in only one country, such as Russia or China, people could flee elsewhere, but with a one world government, if you disagreed to such an extent that you could not in conscience live under circumstance, you could not speak out because of fear of reprisal from a restrictive government, then there would be no place to flee. No place to speak your mind and to be tolerated. Everyone would live under the same restrictions and rules. The very human nature defies it. We must do all we can to prevent such a time.