also tonight the pentagon approveathize deployment of some 1,500 u.s. troops to the southern border with mexico as the u.s. braces for a new surge of thousands of migrants. the pentagon press secretary joins us live to discuss the timing and the scope of this new military mission. and senators clash over a proposed code of ethics for the u.s. supreme court justices at a hearing prompted by scrutiny of justice clarence thomas. i ll speak with chairman dick durbin who s accusing the high court of being in his word oblivious to these ethics issues. welcome to our viewers here in the united states and around the world. i m wolf blitzer and you re in the situation room. we begin with two very consequential deadlines for the biden administration and the country, for that matter. the u.s. facing the dire possibility of defaulting on its debt next month, and a major migrant surge across the southern border is expected next week when a key trump era immigration policy expires. our