bar

bar    [bahr] 

verb.  prevent from entering; forbid

"IOWA's largest newspaper has been barred from attending a Donald Trump campaign event in IOWA after the paper's editorial board called on him to drop out of the race."

"You can bar a high schooler from entering a bar because he's too young to drink."

"Such businesses have been allowed to operate legally in Cuba since 2011 when laws barring private enterprise were relaxed."