SoftBank Corp CEO Masayoshi Son will present his views on the U.S. mobile industry in Washington D.C. next week, the Japanese mobile operator said, after U.S. regulators expressed skepticism towards a potential SoftBank bid for T-Mobile US Inc. Sons presentation to lawmakers, educators and business leaders is his first public speech to a U.S. audience since SoftBanks $21.6 billion acquisition of No.3 U.S. mobile carrier Sprint Corp last year. His comments on the competitive landscape, which have in the past been highly critical, will be watched after sources revealed that Sprint had held talks to buy T-Mobile, the fourth-largest U.S. mobile carrier. Son declined to comment at last months earnings briefing about whether his company was in talks about buying T-Mobile, but had harsh words for the state of the U.S. mobile sector, which is dominated by ATT Inc and Verizon Communications Inc. What I can say is that the United States mobile industry is not competitive compared with other countries and its network is not good, he said.