lots of information on the website SNOPES regarding this.
While it is true replicas of Palmyra’s Temple of Baal arch were planned for temporary display in New York and London, the project solely involves reproducing the structure’s arch and not creating a functional building. The project was tweaked for its London incarnation, and put on hold indefinitely in New York. However, interest in reproducing the demolished antiquity remained archeological in nature, not religious.
On 19 September 2016, the Palmyra arch was unveiled in City Hall Park in Manhattan for a one-week long installation.
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"The world is a dangerous place, not because of those who do evil, but because of those who look on and do nothing." - Albert Einstein