MT4 brokers friendly to scalping

 
Can somebody recommend a forex broker that uses MT4 and tolerates scalping? I am looking for a broker with a spread 3 or less even during low-liquidity times such as night hours. My preference is a broker based in US, UK or Switzerland. I am scared to deal with unregulated PO boxes on small islands (Cypress, Seychelles etc). Is there a way to bypass a broker and get an ECN bridge for MT4 to trade on the interbank market directly?
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