They are the foundations, but one is not under the Law if you are a Christian, because you are under Grace.
When one is under Grace one can see that it's not the Letter of the Law but what the intent of the Law really is. we do not just toss it all away or reject any of it, but it still exist, as it is Gods Laws in fact, or why would God make a Law in the first place ? Jesus never said anything against one thing of the Law, but fulfilled the Law, by adding what was needed to do so for Man, this is coming from the Holy Spirit giving Grace to the whole subject.
The Law is under Grace, not the letter of the Law anymore, such is coming from a totally different prospect, that some just can not get there head around, because they think that the letter of the Law is coming into Christianity, but it's not at all, it's changed fundamentally it's a different perspective because we have the good Grace to see the difference between the Letter of the Law being a dead work, no one is saved by the letter of the Law. it never saved but only condemned. but Jesus came and added them two Laws that must come before every thing of the Law, that must be obeyed, we are not under the Law, we are under Grace and can put the Law into perspective as to man.
If one was to take Grace away and hand the Law back to the Jew then you are under the letter of the Law and will be dealt with as such, just like it is with all the Socialist, Communist, Nazis, are truly under, because such in fact truly reject Grace.
If one does not know God how can they have Grace, such only do the works of man and are lost as to the Holy Spirit, Jesus Christ is not within them and as such they do not have Grace.
When I talk to people I can see they do not know God and are lost and are just carnal man a wild beast is within them, they may even say that they are not against the Law of the OT but the problem is that they do not understand the position and if they do not comprehend the difference well they are lost and they are lost to the Holy Spirit and Grace.
It's the Holy Spirit that will confirm such and Grace abound, other than that one will mistake the difference between the two perspectives. the Jew not knowing God and anyone not knowing God will not comprehend the two perspectives and are condemned and them who try to dismiss the Law are of Satan, trying to lead all astray.