The legal basis for keeping the Flytilla out

Many nations have specific laws in place to prevent infiltrations such as this weekends flytilla to Israel

From our friends at Five Minutes for Israel (and thanks, David for the cool logo!)

The legal basis for keeping the Flytilla out
Management reserves the right to refuse service to anyone

America asserts her right to refuse entry in detail.
United States Code 8 USC § 1182

a) Classes of aliens ineligible for visas or admission

Except as otherwise provided in this chapter, aliens who are inadmissible under the following paragraphs are ineligible to receive visas and ineligible to be admitted to the United States:

(3) Security and related grounds

(A) In general

Any alien who a consular officer or the Attorney General knows, or has reasonable ground to believe, seeks to enter the United States to engage solely, principally, or incidentally in—

(i) any activity

(ii) any other unlawful activity, or (that surely includes causing damage by closing down Ben Gurion Airport for their photo opportunity)

(iii) any activity a purpose of which is the opposition to, or the control or overthrow of, the Government of the United States by force, violence, or other unlawful means,

is inadmissible (Palestine from the river to the sea. BTW is there any lawful means to advocate these things?)

(B) Terrorist activities

(i) In general Any alien who—

(I) has engaged in a terrorist activity;

(II) a consular officer, the Attorney General, or the Secretary of Homeland Security knows, or has reasonable ground to believe, is engaged in or is likely to engage after entry in any terrorist activity (as defined in clause (iv));

(III) has, under circumstances indicating an intention to cause death or serious bodily harm, incited terrorist activity;

(IV) is a representative (as defined in clause (v)) of—

(aa) a terrorist organization (as defined in clause (vi)); or (The USA and other countries define Hamas as a terrorist group even if these fools deny it).

(bb) a political, social, or other group that endorses or espouses terrorist activity (that covers ISM and most anyone who thinks blowing-up a bus is legitimate resistance);

(V) is a member of a terrorist organization described in subclause (I) or (II) of clause (vi);

(VI) is a member of a terrorist organization described in clause (vi)(III), unless the alien can demonstrate by clear and convincing evidence that the alien did not know, and should not reasonably have known, that the organization was a terrorist organization;

(VII) endorses or espouses terrorist activity or persuades others to endorse or espouse terrorist activity or support a terrorist organization;

(VIII) has received military-type training (as defined in section 2339D (c)(1) of title 18) from or on behalf of any organization that, at the time the training was received, was a terrorist organization (as defined in clause (vi)); or

(IX) is the spouse or child (I guess that means the family holiday to Ramallah is off) of an alien who is inadmissible under this subparagraph, if the activity causing the alien to be found inadmissible occurred within the last 5 years,
is inadmissible. An alien who is an officer, official, representative, or spokesman of the Palestine Liberation Organization is considered, for purposes of this chapter, to be engaged in a terrorist activity. (Oops! Aren’t Fatah supposed to be the moderates?)

Ireland and the UK also maintain the right to deny enerance to anyone.
Read it all at 5 minutes for Israel