Our federal legislators have a duty to uphold the Constitution, and not therefore to go about their business as if the Constitution can be discarded, ignored, distorted, obliterated, or altered, for any law passed by the legislature that contradicts the Constitution is not legitimate law. While legislators are entitled to debate Constitutional law, and if necessary to create legislation that will change Constitutional law, that law only comes into effect when a proposed constitutional Amendment is actually approved by a supermajority in both houses of congress, and then ratified by three-quarters of the States in a reasonable period of time.
Then there are those legislators that believe that we have a "living Constitution" which can be defined in a number of ways, to which by far the most damaging of these definitions, would be one, that stipulates that the Constitution and its meaning, changes over time, thereby properly adjusting to the changes and needs of the people over time, somewhat akin to modern knowledge, for instance, that scientists have proven to us that the center of the universe is not the earth, nor is it flat, thereby, in reality, as our knowledge and comprehension of this world, has become more comprehensive, our Constitution adjusts to this newfound wisdom.
The problem with taking any fixed and written document, and then attempting to sell the point that it changes with the times, effectively means that the document although written is not fixed, which in substance means that law is always in a flux, and law that changes with the prevailing winds of the time, is not only not good law, it really isn't law at all. The fact of the matter is America has a Constitution, structured in such a manner that it can be amended, which it has been twenty-seven times, and thereby legislators that take office in this country, do not properly have the option of ignoring or altering the Constitution without going through the procedural steps as instructed by said Constitution.
Another very important point that legislators often fail to grasp, is that their sacred duty, is not to enact laws here and there per their own volition, but their foremost duty is actually to act on behalf of the people, specifically as their elected representatives, within the confines of the Constitution. While there isn't anything wrong with desiring to effect change, if that be the people's will, to do so, within the structure of our government, necessitates, that certain steps be taken and adhere to, with always the foundation being that implementation of these changes must fall under the auspices of Constitutional structure.
If, instead, those that legislate, whether for their own power, or subversion of power, or to take power, or abuse power, or political power, look upon the Constitution as an instrument that can be stretched, bent, twisted, or re-interpreted so as to favor one's own desires, especially to the exclusion of the people and specifically the perversion of the Constitution, are no patriots to this country. These legislators, are best seen as usurpers of the people's will, usurpers of the Constitution, that march only to the beat of their own avarice and believe as Kings did of old, that the rulers are above the law, above the Constitution, above the people, so that the great mass of citizens of this country are treated thereby as puppets to be controlled by their legislative puppeteers.