So anyone saying "from the river to the sea" could be reported to the police, but would it be a defence to cite Likud's original platform that "between the Sea and the Jordan there will only be Israeli sovereignty"? Or the various Zionist groups who would regard "the land of Israel" as including both sides of the Jordan (there was even a song for that - though the original imagined a harmonious unity between the Arab, the Christian and the Jew", being more about the kingdom of Jordan as "artificial").
Though my country may be poor and small
It is mine from head to foot.
Stretching from the sea to the desert
And the Jordan, the Jordan in the middle.
Two Banks has the Jordan –
This is ours and, that is as well.
From the wealth of our land there shall prosper
The Arab, the Christian, and the Jew,
For our flag is a pure and just one
It will illuminate both sides of my Jordan.
The Jewish left in the States seems keen to find writers to explain that the "river to the sea" phrase "doesn't mean what you think it means", and others to tarce cite Ben Gurion in 1947 (my italics):
"My assumption (which is why I am a fervent proponent of a state, even though it is now linked to partition) is that a Jewish state on only part of the land is not the end but the beginning.
"When we acquire one thousand or 10,000 dunams, we feel elated. It does not hurt our feelings that by this acquisition we are not in possession of the whole land. This is because this increase in possession is of consequence not only in itself, but because through it we increase our strength, and every increase in strength helps in the possession of the land as a whole. The establishment of a state, even if only on a portion of the land, is the maximal reinforcement of our strength at the present time and a powerful boost to our historical endeavors to liberate the entire country.
"We shall admit into the state all the Jews we can. We firmly believe that we can admit more than two million Jews. We shall build a multi-faceted Jewish economy – agricultural, industrial, and maritime. We shall organize an advanced defense force—a superior army which I have no doubt will be one of the best armies in the world. At that point I am confident that we would not fail in settling in the remaining parts of the country, through agreement and understanding with our Arab neighbors, or through some other means."