She's yammering on about how the USA isn't supposed to be a secular country, that it's supposed to be a "Christian" country.
A: Ms. Harris' brand of "Christianity" is not actually Christianity, just fundamentalist Dark Ages fire-and-brimstone crap that ignores Jesus's teachings of love and peace.
B: Let me quote Thomas Jefferson, y'know, that same Thomas Jefferson who
wrote the Declaration of Independence and served as the 3rd US President: "In every country and in every age, the priest has been hostile to liberty. He is always in alliance with the despot, abetting his abuses in return for protection to his own."
"I have ever thought religion a concern purely between our God and our consciences, for which we were accountable to Him, and not to the priests."
"No religious reading, instruction or exercise, shall be prescribed or practiced
inconsistent with the tenets of any religious sect or denomination."
"The Christian religion, when divested of the rags in which they have enveloped it, and brought to the original purity and simplicity of it's benevolent institutor, is a religion of all others most friendly to liberty, science, and the freest expansion of the human mind."
"The clergy, by getting themselves established by law and ingrafted into the machine of government, have been a very formidable engine against the civil and religious rights of man."
"But a short time elapsed after the death of the great reformer of the Jewish religion, before his principles were departed from by those who professed to be his special servants, and perverted into an engine for enslaving mankind, and aggrandizing their oppressors in Church and State."
"Believing... that religion is a matter which lies solely between man and his God, that he owes account to none other for his faith or his worship, that the legitimate powers of government reach actions only, and not opinions, I contemplate with sovereign reverence that act of the whole American people which declared that their Legislature should 'make no law respecting an establishment of religion, or prohibiting the free exercise thereof,' thus building a wall of separation between Church and State."
"The law for religious freedom... put down the aristocracy of the clergy and restored to the citizen the freedom of the mind."
***
http://etext.virginia.edu/jefferson/quotations/jeff1650.htm
C: Or how about George Washington?
"There is nothing which can better deserve our patronage than the promotion of science and literature. Knowledge is in every country the surest basis of public happiness."
"...the path of true piety is so plain as to require but little political direction."
"Religious controversies are always productive of more acrimony and irreconcilable hatreds than those which spring from any other cause."
"If they are good workmen, they may be from Asia, Africa or Europe; they may be Mahometans, Jews, Christians of any sect, or they may be Atheists...."
"...I beg you be persuaded that no one would be more zealous than myself to establish effectual barriers against the horrors of spiritual tyranny, and every species of religious persecution."
"The blessed Religion revealed in the word of God will remain an eternal and awful monument to prove that the best Institutions may be abused by human depravity; and that they may even, in some instances, be made subservient to the vilest of purposes."
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http://atheism.about.com/library/quotes/bl_q_GWashington.htm
D: Evidently, Katherine Harris hates the Founding Fathers, and thus, let me paraphrase the battle cry of her deformed (and sadly, still in power) branch of the Republican party: "She hates freedom!"